Patent ID: 12252943

DETAILED DESCRIPTION

Detailed descriptions of one or more preferred embodiments are provided herein. It is to be understood, however, that the present invention may be embodied in various forms. Therefore, specific details disclosed herein are not to be interpreted as limiting, but rather as a basis for the claims and as a representative basis for teaching one skilled in the art to employ the present invention in any appropriate system, structure or manner.

FIG.1is an overall perspective view of one embodiment of a skid mounted system which can be used in the method and apparatus5.

Generally, the system can include first debris catcher800, second debris catcher1800, pressure regulating valve170, and controller that is operatively connected to a plurality of valves and sensors to selectively place the debris catchers in a debris catching state or flushing or cleaning state, and an externally supplied fluid stream into the inlet of the debris catcher placed in the debris catching mode (either the inlet810of first debris catcher800or the inlet1810of second debris catcher1800), and such fluid stream will leave the cleaned fluid outlet of the debris catcher in debris catching mode (either second outlet850of first debris catcher800or second outlet1850of second debris catcher1800), leaving the outlet, passing through a choke valve170, and then either sent to be used in wellbore operations, or at least part of the stream being directed to the inlet of the debris catcher placed in fluish mode (either the inlet810of first debris catcher800or the inlet1810of second debris catcher1800) and exiting said debris catch in its flushing exit (either first outlet820of first debris catcher800or first outlet1820of second debris catcher1800).

FIG.2is a side view of a debris catcher800which can be used in the skid mounted system ofFIG.1.FIG.3is a sectional view of the debris catcher800taken along the lines3-3.FIG.4is a perforated cylindrical shell900which can be used in the debris catcher800.

Generally, debris catcher800can include shell800which includes inlet810, clean fluid outlet850, and flushing outlet820. Shell830can include bore or interior808having a longitudinal axis804. Coaxially located in shell830can be a perforated tube900which includes first end910, second end920, shell930, bore or interior between the first and second ends, and a plurality of openings or perforations930in shell930. As indicated byFIG.3, perforated tube900can be located in the interior808of shell830such that the two longitudinal axes804,904are coincident. The outer diameter of shell930is smaller than the diameter of bore808such that an annular space950is created between shell930and shell830.

Depending on the flow path of fluid through debris catcher800, it can be in a cleaning mode or a flushing mode.

Flow in a cleaning mode enters inlet810(schematically indicated by arrow812) and flows into interior908of perforated tube. Flushing outlet820is blocked and cleaning outlet850is opened causing flow to pass through the plurality of perforations930of shell930, into the annular space950, and exit cleaning outlet850. Any debris or mud which is larger than the size of the plurality of perforations930will be blocked by shell930and accumulate in interior908of tube900. Only treated/cleaned fluid will pass through the plurality of perforations930.

Flow in a flushing mode enters inlet810(schematically indicated by arrow812) and flows into interior908of perforated tube. Cleaning outlet850is blocked and flushing outlet820is opened causing flow to push in the direction of arrows812and822debris or mud which had accumulated in the interior908of perforated tube and causing it to exit flushing outlet820.

Catching Debris from a Fluid Source Using Selectable LH or RH Debris Catchers

Fluid source A passing through LH debris catcher, and then sent to an oil field service application.

Fluid source A passing through RH debris catcher, and then sent to an oil field service application.

The selection of either LH or RH debris catcher is made by changing the states of one or more valves fluidly connected to LH and/or RH debris catchers.

Changing Debris Catcher Between Modes of Debris Catching and Flushing or Cleaning

Switching from Debris Catching to Flushing or Cleaning

As a debris catcher catches or removes debris from a fluid source, the resistance to further fluid flow through the debris catcher will increase causing the inlet pressure of the debris catcher to increase. In one embodiment, a pressure for the debris catcher is measured and, if that pressure exceeds a predetermined target debris catching pressure, then the debris catcher is placed in a flushing or cleaning mode to remove debris from the debris catcher. In one embodiment the predetermined target debris catching pressure must be exceeded for a predetermined target time period of continued high debris catching pressure before the debris catcher is placed in the flushing or cleaning mode. In one embodiment, the debris catcher is placed in the flushing or cleaning mode after the time period of flow thru the debris catcher exceeds a predetermined target maximum debris catching time period for fluid flow through the debris catcher.

Switching from Flushing or Cleaning to Debris Catching

In the flushing or cleaning mode, fluid can be flowed through debris catcher and during the time of flow of such flushing or cleaning fluid, the resistance to fluid flow through the debris catcher will decrease causing the inlet pressure of the debris catcher to decrease. In one embodiment, a pressure for the debris catcher is measured and, if that pressure drops below a predetermined target flushing or cleaning pressure, then the debris catcher is placed in a debris catching mode. In one embodiment the predetermined target flushing or cleaning pressure must be below for a predetermined target time period of continued low debris flushing or cleaning pressure before the debris catcher is placed debris catching mode. In one embodiment, the debris catcher is placed in the debris catching mode after time period of flow thru the debris catcher while in the flushing or cleaning mode exceeds a predetermined target maximum debris flushing or cleaning time period for flushing or cleaning fluid flow through the debris catcher.

Simultaneous Debris Catching With A First Debris Catcher While Flushing Or Cleaning A Second Debris Catcher

Fluid from fluid source A passing through LH debris catcher, and (a) a first part of fluid from fluid source A that has passed through LH debris catcher being directed for use in an oil field service application, (b) a second part of fluid that has passed through LH debris catcher being passed through RH debris catcher to clean/flush RH debris catcher, and (c) both (a) and (b) being performed while fluid from fluid source A passes through LH debris catcher.

Fluid from fluid source A passing through RH debris catcher, and (i) a first part of fluid from fluid source A that has passed through RH debris catcher being directed for use in an oil field service application, (ii) a second part of fluid that has passed through LH debris catcher being passed through LH debris catcher to clean/flush LH debris catcher, and (iii) both (i) and (ii) being performed while fluid from fluid source A passes through RH debris catcher.

Same Fluid Stream Source A For Fluid Flow Through both (a) First Debris Catcher in Debris Catching Mode and (b) Second Debris Catcher in Flushing or Cleaning Mode, The Same Pressure Regulating Device Causing a First Pressure For The Debris Catching Mode And A Second Pressure For the Flushing or Cleaning Mode Where the First Pressure Is Different From The Second Pressure

Generally, the pressure of the fluid stream entering the first debris catcher in the debris catching mode (e.g. the First Pressure) is expected to be greater than the pressure of the fluid entering the second debris catcher in the flushing or cleaning mode (e.g., the Second Pressure). This is because the fluid entering the second debris catcher in the flushing or cleaning mode has passed through the pressure regulating device (e.g., a pressure controlling or choke valve) causing a pressure drop before the fluid stream enters the debris catcher in the flushing or cleaning mode. Adding the overall difference between the pressures of the fluid entering (a) the first debris catcher in the debris catching mode (First Pressure) and (b) the second debris catcher in the flushing or cleaning mode (Second Pressure) is the pressure drop of the fluid stream as it passes through the first debris catcher in the debris catching mode.

Generally, the pressure regulating device (e.g., a pressure controlling or choke valve) can vary and control both the First Pressure and the Second Pressure. For example, as pressure regulating device is set to increase resistance to flow through itself, it (a) increases a back-pressure which must be overcome for flow through the pressure regulating device thereby increasing the First Pressure (the fluid entering the first debris catcher in the debris catching mode (First Pressure) and (b) increases the pressure drop across pressure regulating device thereby decreasing the Second Pressure (the fluid entering the second debris catcher in the flushing or cleaning mode).

Reserve Pressure Regulating Device And Bypass Flow

In one embodiment, first and second pressure regulating devices are provided each of which can be selectively fluidly connected for regulating First and Second Pressures. In one embodiment second pressure regulating device can be a reserve pressure regulating device. Such a “reserve condition” allows the first pressure regulating device to be used while repairs and/or maintenance are simultaneously performed on the second pressure regulating device and vice versa.

In one embodiment a bypass is provided which allows flow to be bypassed either or both of the first and second pressure regulating devices.

Reserve Valving For Flow Paths

In one embodiment, flow path(s) of the fluids are controlled by a plurality of valves. In one embodiment for one or more valves are reserve or failsafe valves and can be paired with the one or more primary valves. For example, in one embodiment certain valves can be controlled by a controller but one or more of these “control” valves can be paired with manually operated valves. For example, in this embodiment a user can manually control (e.g., stop) flow with the “paired manual” valve if its sister automatically controlled valve is stuck in an open position.

FIG.14is a simplified diagram of the method and apparatus but now showing the redundant valving ofFIG.5. Compared toFIG.10,FIG.14shows additional valves20,60,70,110,150,190,200,240,270,290,320,330,360,380,390, and410. These valves are normally in an open state and are manual valves so do not impact the normal operating flows pathways controlled by controller1000. Accordingly, they have been omitted for simplicity in the schematic diagrams ofFIGS.10through13. However, one or more of these valves can be manually closed for example, in case of a failure of the valve paired with said valve that is controlled by controller1000.

Valve120is a manually operated valve that is normally closed. However, valve120can be opened manually to by-pass both debris catchers800and1800(from 10 directly to line135). Similarly, valve230is a manually operated valve that is normally closed. However, valve230can be opened to by-pass both choke valves170and220(from line135directly to line265).

Catching Debris Contained in Fluid Source A Via First Debris Catcher (flow path2000)

As schematically indicated inFIG.6, fluid source A (e.g., well effluents) can enter apparatus5at inlet10, pass through valve20, valve30, and into first debris catcher800via inlet810.FIG.10is a simplified flow diagram of the method and apparatus as shown inFIG.6(with redundant valving omitted for simplicity).

Solids within the fluid source are captured inside first debris catcher800via a selective screen/filter900.

The now screened/filtered fluids exit debris catcher800via outlet850continuing to flow through valve50, valve60, entering T-component130, and then through pipe135. The flow leaving pipe135enters T-component140, passes through valve150, valve160, and enters pressure/flow control valve170(which can be a choke valve). Controller1000can be operatively connected to valve170such that flow rate of the screened/filtered fluid stream along with the pressure drop across valve170which can be an adjustable or fixed diameter choke. By controlling amount of opening of valve170controller1000can control flow rate and pressure drop of the fluid stream through valve170, along with the backpressure in line135seen by outlet850of first debris catcher800.

The now pressure reduced flow continues through valve180, valve190, and then to diverting component260.

The above described flow path from inlet10through first debris catcher800and to diverting component260is collectively called flow path2000(e.g., flow path indicated by arrows502,504,506,508,510,512,514,516,518,520, and522).

To direct fluid flow through flow path2000controller1000can maintain in an open condition valves30,50,160, and180, while maintaining in a closed condition valves80,100,210,300, and320.

The fluid stream from the diverting component260continues to flow through valve360, valve370, valve380, and exits the system5through exit420(e.g., flow path indicated by arrows550,552,554,556,558, and560). To direct fluid from diverting component260to exit420, controller1000can maintain in an open condition valve266, while maintaining in a closed condition valves280,300, and400.

After exiting system5, fluid stream can be used in an oilfield process such as drilling or well fracturing (schematically indicated as operation1100).

Catching Debris Contained in Fluid Source a Via Second Debris Catcher (Flow Path2100)

FIG.8is the piping layout ofFIG.5schematically indicating the second debris catcher1800catching flow of fluid passing therethrough.FIG.12is a simplified flow diagram of the method and apparatus as shown inFIG.8(with redundant valving omitted for simplicity). As schematically indicated inFIG.12, alternatively, fluid source A (e.g., well effluents) can enter inlet10, pass through valve70, valve80, and into second debris catcher1800via inlet1810.

Solids within the fluid source A are captured inside second debris catcher1800via a selective screen/filter900′.

The now screened/filtered fluids exit second debris catcher1800via outlet1850continuing to flow through valve100and valve110, entering T-component130, and then through pipe135. The flow leaving pipe135enters T-component140, passes through valve150, valve160, and enters pressure/flow control valve170(which can be a choke valve).

Controller1000can be operatively connected to valve170such that flow rate of the screened/filtered fluid stream along with the pressure drop across valve170which can be an adjustable or fixed diameter choke. By controlling amount of opening of valve170controller1000can control flow rate and pressure drop of the fluid stream through valve170, along with the backpressure in line135seen by outlet1850of second debris catcher1800.

The now pressure reduced flow continues through valve180, valve190, and then to diverting component260. The above described flow path from inlet10through second debris catcher1800and to diverting component260is collectively called flow path2100(e.g., flow path indicated by arrows602,604,606,608,610,612,614,616,618,620, and622).

To direct fluid flow through flow path2100controller1000can maintain in an open condition valves80,100,160, and180, while maintaining in a closed condition valves30,50,210, and280.

The fluid stream from the diverting component260continues to flow through valve360, valve370, valve380, and exits the system5through exit420(e.g., flow path indicated by arrows650,652,654,656,658, and660).

To direct fluid from diverting component260to exit420, controller1000can maintain in an open condition valve266, while maintaining in a closed condition valves280,300, and400.

After exiting system5, fluid stream can be used in an oilfield process such as drilling or well fracturing (schematically indicated as operation1100).

Fluid stream from the diverting component260flows through valve360, valve370, valve380, and exits the system5through exit420. After exiting system5, fluid stream can be used in an oilfield process such as drilling or well fracturing (schematically indicated as operation1110).

Switching to Catching Debris Contained In Fluid Source A Via Second Debris Catcher, While Simultaneously Using Fluid Source A to Clean/Flush First Debris Catcher

Eventually first debris catcher800will become substantially filled with debris from fluid A flowing through it. First debris catcher800can be cleaned or flushed of such debris.

In one embodiment first debris catcher800can be cleaned or flushed of debris without disrupting the flow of fluid stream A into apparatus5.FIG.7is the piping layout ofFIG.5schematically indicating the first debris catcher800(left hand debris catcher) being fluished/cleaned while the right hand debris catcher is catching flow of fluid passing therethrough.FIG.11is a simplified flow diagram of the method and apparatus as shown inFIG.7(with redundant valving omitted for simplicity).

In one embodiment first debris catcher800can be cleaned or flushed of debris while second debris catcher1800simultaneously catches debris from fluid stream A.

In one embodiment the fluid stream exiting second catcher1800can be used to flush or clean first catcher800while second debris catcher1800simultaneously catches debris from fluid stream A.

Upon detection of first debris catcher800becoming filled (for example by measuring an increase of differential pressure over a target amount, or other decision), the flow of fluid stream A to apparatus5(via inlet10) does not need to be stopped to flush/clean the debris located inside first debris catcher800.

In one embodiment, to flush/clean a now full first debris catcher800, flow of fluid stream A from inlet10is diverted from first debris catcher800to second debris catcher1800so that second debris catcher1800now catches debris from fluid stream A. This can be done by controller1000opening and closing various valves so that flow from fluid stream A starting at inlet10now follows flow path2100(e.g., flow path indicated by arrows602,604,606,608,610,612,614,616,618,620, and622). To direct fluid flow through flow path2100controller1000can maintain in an open condition valves80,100,160, and180, while maintaining in a closed condition valves30,50,210, and280.

However, part of the fluid stream A exiting second debris catcher1800can be used to flush or clean first debris catcher800. In this embodiment the apparatus5can be switched from flow path2000(schematically shown inFIG.6) to flow path2100(schematically shown inFIG.7). To direct fluid flow through flow path2100controller1000can maintain in an open condition valves80,100,160, and180, while maintaining in a closed condition valves30,50,210, and280.

To partially direct flow to flush first debris catcher800, controller1000can open valves300and320(and close valve50) so that at least part of the flow leaving second debris catcher1800from its second outlet850through pipe135, through valve160and to junction260, will be diverted from junction260to enter pipe285pass through valve300, enter first inlet810of first debris catcher800, and exit second outlet820of first debris catcher800(e.g., flow path indicated by arrows670,672,672,676,678,680, and682), passing through valve320and exiting outlet350to storage tank1120(e.g., flow path indicated by arrows682,684, and686).

Such flushing or cleaning of first debris catcher800can be performed while cleaned fluid from fluid stream A is still output at clean fluid output420so that this output can provide a continuous stream of cleaned fluid from fluid stream A. At diverting component260, part of the fluid stream A leaving second debris catcher1800can be diverted to clean or flush first debris catcher800(e.g., flow path indicated by arrows670,672,672,676,678,680, and682), while the remaining portion of the fluid stream leaving debris catcher1800leaves flows through diverter260, valve370, and valve380and exits the system through component420and can be used in an oilfield process such as drilling or well fracturing (e.g., flow path schematically indicated by arrows650,652,654,656,658, and660).

The part of the fluid stream leaving second debris catcher1800that is diverted to first debris catcher800, enters pipe285through valve290, valve300, and into first debris catcher800(e.g., flow path schematically indicated by arrows670,672,674,676,678, and680), flowing through first debris catcher800(and exiting at outlet850), to valve310, valve320, and finally exiting system5via outlet or exit component350(e.g., flow path schematically indicated by arrows682,684, and686). Here, the fluid passing through first debris catcher800is fluid from fluid stream A but after such fluid has previously passed through second debris catcher1800(exiting this second debris catcher1800at outlet1850). In this manner debris/dirt can be cleaned/caught from fluid stream A while simultaneously the fluid from fluid stream A (after leaving second debris catcher1800) can clean/flush out first debris catcher800.

While flowing through flow path2100, valve80and valve100are opened to allow fluid flow and debris to be captured by second debris catcher1800. Upon verification of the valves open, valve and vale50are closed.

Flow continues through flow path2100(using second debris catcher1800) of the debris catcher section.

In order to flush the debris captured inside first debris catcher800, valve300is opened allowing flow from diverting component260of the pressure/flow control section through pipe285and into inlet810of first debris catcher800to flush out any debris inside this unit leaving debris outlet820(e.g., flow path schematically indicated by arrows670,672,674,676,678, and680). Valve320is opened to release the pressure trapped in first debris catcher800pushing the captured debris through outlet820and exiting exit component350, thereby exiting the system5to a debris/dirt processing or waste unit1120. If additional flow is required to first debris catcher800to flush out its accumulated debris, valve370of the pressure/flow control section can be closed to divert the entire flow leaving choke valve170(from flow path2100) to the inlet810of first debris catcher800.

Even after first debris catcher800is cleaned or flushed as described above, second debris catcher1800can continued to be used to catch/clean debris/mud until it fills with accumulated debris/mud. When second debris catcher1800fills with accumulated debris/mud, then it can be flushed or cleaned as described below.

Switching to Catching Debris Contained In Fluid Source A Via First Debris Catcher, While Simultaneously Using Fluid Source A to Clean/Flush Second Debris Catcher

Eventually second debris catcher1800will become substantially filled with debris from fluid A flowing through it. Second debris catcher1800can be cleaned or flushed of such debris.

In one embodiment second debris catcher0800can be cleaned or flushed of debris without disrupting the flow of fluid stream A into apparatus5.FIG.9is the piping layout ofFIG.5schematically indicating the right hand debris catcher being flushed/cleaned while the left hand debris catcher is catching flow of fluid passing therethrough.FIG.13is a simplified flow diagram of the method and apparatus as shown inFIG.9(with redundant valving omitted for simplicity).

In one embodiment second debris catcher1800can be cleaned or flushed of debris while first debris catcher800simultaneously catches debris from fluid stream A.

In one embodiment the fluid stream exiting first debris catcher800can be used to flush or clean second catcher1800while first debris catcher800simultaneously catches debris from fluid stream A.

Upon detection of second debris catcher1800becoming filled (for example by measuring an increase of differential pressure over a target amount, or other decision), the flow of fluid stream A to apparatus5(via inlet10) does not need to be stopped to flush/clean the debris located inside second debris catcher1800.

In one embodiment, to flush/clean a now full second debris catcher1800, flow of fluid stream A from inlet10is diverted from second debris catcher1800to first debris catcher800so that first debris catcher800now catches debris from fluid stream A. This can be done by controller1000opening and closing various valves to that flow from fluid stream A starting at inlet10follows flow path2200. However, part of the fluid stream A exiting first debris catcher800can be used to flush or clean second debris catcher1800. In this embodiment the apparatus5can be switched from flow path2100(schematically shown inFIG.7) to flow path2000(schematically shown inFIG.6).

Such flushing or cleaning of second debris catcher1800can be performed while cleaned fluid from fluid stream A is still output at clean fluid output420so that this output can provide a continuous stream of cleaned fluid from fluid stream A. At diverting component260, part of the fluid stream A leaving first debris catcher800can be diverted to clean or flush second debris catcher1800, while the remaining portion of the fluid stream leaving first debris catcher800leaves flows through valve360, valve370, and valve380and exits the system5through component420and can be used in an oilfield process such as drilling or well fracturing as schematically indicated by box1110(e.g., flow path schematically indicated by arrows570,572,574,576,578, and580).

The part of the fluid stream leaving first debris catcher800that is diverted to second debris catcher1800is diverted by opening valve280causing fluid to flow through pipe286through valve270, valve280, and into second debris catcher1800(at inlet1810), flowing through second debris catcher1800(and exiting at outlet1820), to valve330, valve340, and finally exiting system5via outlet or exit component350(e.g., flow path schematically indicated by arrows570,572,574,576,578, and580). Here, the fluid passing through second debris catcher1800is fluid from fluid stream A but after such fluid has previously passed through first debris catcher800(exiting this first debris catcher800at outlet850). In this manner debris/dirt can be cleaned/caught from fluid stream A while simultaneously the fluid from fluid stream A (after leaving first debris catcher800) can clean/flush out second debris catcher1800.

While flowing through flow path2000, valve20and valve30are open to allow fluid flow and debris to be captured by first debris catcher800. Upon verification of the valves open, valve80and valve100are closed.

Flow continues through flow path2000(using first debris catcher800) of the debris catcher section.

In order to flush the debris captured inside second debris catcher1800, valve280is opened allowing flow from diverting component260of the pressure/flow control section through pipe288and into inlet1810of second debris catcher1800to flush out any debris inside this unit leaving debris outlet1820. Valve340is opened to release the pressure trapped in second debris catcher1800pushing the captured debris through outlet1820and exiting exit component350, thereby exiting the system5to a debris/dirt processing or waste unit1120. If additional flow is required to second debris catcher1800to flush out its accumulated debris, valve370of the pressure/flow control section can be closed to divert the entire flow leaving choke valve170(from flow path2000) to the inlet1810of second debris catcher1800.

Even after second debris catcher1800is cleaned or flushed as described above, first debris catcher800can continued to be used to catch/clean debris/mud until it fills with accumulated debris/mud. When first debris catcher800fills with accumulated debris/mud, then it can be flushed or cleaned as described above.

In the above manner first800and second1800debris catchers can be alternatively used to clean debris/dirt from stream A while the other is being flushed with fluid that has been cleaned from stream A.

Paired Manual And Automatic Valving

In various embodiments a manual valve can be paired with its sister control valve to provide a fallback safety condition if the control valve fails. Under normal operating conditions each of the manual valves are in an open conditions thereby allowing controller1100to control flow through the system5by opening and closing selected sets of control valves. The following is a listing of the paired manual/control valves shown in one embodiment. Such pairing is a providing for safety concerns but is not required by system5.

Valves290/300,20/30,70/80,60/50,110/100,310,320,330/340,270/280,150/160,190/180,200/210,240/230,360/370, and390/400.

Alternate Flow Paths

In one embodiment, alternate flow path(s) are provided for certain portions of the system are controlled by a plurality of valves.

For example, inFIG.12an alternate flow path is possible to the flow path schematically indicated by flow arrows654,656, and658, wherein valve370can be closed by controller1000and valve400opened by controller1000. In this alternate flow path valve400would take the place of valve370for flow through the system thereby allowing valve370to be serviced while still using the method and apparatus.

As another example, inFIG.12an alternate flow path is possible to the flow path schematically indicated by flow arrows616,618, and6620, wherein valve160and/or180can be closed by controller1000and valves210and230opened by controller1000. In this alternate flow path pressure regulated valve220would take the place of pressure regulated valve170for flow through the system thereby allowing valve170to be serviced while still using the method and apparatus.

It is to be understood that the invention is not to be limited or restricted to the specific examples or embodiments described herein, which are intended to assist a person skilled in the art in practicing the invention. For example, the number of fluids to be mixed, the number of inlets, the number of outlets, the number of spill over plates, and the number of chambers may vary according to the desired results of a particular application. Also, the dimensions of the various components of the multi-chamber manifold may be scaled to achieve the desired results of a particular application. Accordingly, numerous changes may be made to the details of procedures for accomplishing the desired results. These and other similar modifications will readily suggest themselves to those skilled in the art, and are intended to be encompassed within the spirit of the present invention disclosed herein and the scope of the appended claims.

The following is a list of reference numerals:

LIST FOR REFERENCE NUMERALS(Ref No.)(Description)5method and apparatus10inlet for well fluids to be treated(e.g., 4-way connector)20valve30valve40left hand debris catcher50valve60valve70valve80valve90right hand debris catcher100valve110valve120valve125by-pass line130T-component (possibly a swivel T)135pipe140T-component (possibly a swivel T)150valve160valve170pressure/flow control valve (choke)180valve190valve200valve210valve220pressure/flow control valve (choke)230valve240valve250valve255by-pass line260diverter (e.g., 4-way connector)265line/pipe266line/pipe267line/pipe270valve280valve285line/pipe286line/pipe287line/pipe290valve300valve310valve320valve330valve340valve350exit component360valve370valve380valve390valve400valve410valve420flushing fluid outlet500arrow502arrow504arrow506arrow508arrow510arrow512arrow514arrow516arrow518arrow520arrow522arrow550arrow552arrow554arrow556arrow558arrow560arrow570arrow572arrow574arrow576arrow578arrow580arrow600arrow602arrow604arrow606arrow608arrow610arrow612arrow614arrow616arrow618arrow620arrow622arrow650arrow652arrow654arrow656arrow658arrow660arrow670arrow672arrow674arrow676arrow678arrow680arrow800debris catcher804longitudinal axis808bore or interior810first end812arrow820second end822arrow824flushing/cleaning line830shell850outlet852arrow900perforated tube904longitudinal axis908bore or interior910first end912arrow916length918length920second end922arrow930shell930plurality of openings or perforations932plurality of arrows950annular gap between exterior of perforated tubeand interior of shell of debris catcher952arrow1000controller1080skid1800debris catcher1804longitudinal axis1808bore or interior1810first end1812arrow1820second end1822arrow1824flushing/cleaning line1830shell1850outlet1852arrow2000fluid flow path2100fluid flow path2200fluid flow path

All measurements disclosed herein are at standard temperature and pressure, at sea level on Earth, unless indicated otherwise. All materials used or intended to be used in a human being are biocompatible, unless indicated otherwise.

It will be understood that each of the elements described above, or two or more together may also find a useful application in other types of methods differing from the type described above. Without further analysis, the foregoing will so fully reveal the gist of the present invention that others can, by applying current knowledge, readily adapt it for various applications without omitting features that, from the standpoint of prior art, fairly constitute essential characteristics of the generic or specific aspects of this invention set forth in the appended claims. The foregoing embodiments are presented by way of example only; the scope of the present invention is to be limited only by the following claims.