Source: http://www.google.com/patents/US8066063?dq=5,987,610
Timestamp: 2017-10-23 10:39:36
Document Index: 24293384

Matched Legal Cases: ['Application No. 2004289864', 'Application No. 2', 'Application No. 05717806', 'Application No. 06024001', 'Application No. 05717806', 'Application No. 10185795', 'Application No. 10185612', 'Application No. 01980737', 'Application No. 10013192', 'Application No. 10185795', 'Application No. 10161116', 'Application No. 10161117', 'Application No. 10161120', 'Application No. 10167181', 'Application No. 10167182', 'Application No. 10167183', 'Application No. 10167184', 'Application No. 2001', 'Application No. 20032037', 'Application No. 20015431', 'Application No. 07842464', 'Application No. 10167181', 'Application No. 2', 'Application No. 10185212', 'Application No. 200903221', 'Application No. 01980737', 'art 1', 'art 2']

Patent US8066063 - Capillary injector - Google Patents
A mineral extraction system includes a branch having a branch passage, a diverter coupled to the branch passage, and a capillary injection conduit disposed inside to the branch passage. A method of injecting chemicals includes injecting a chemical into a capillary injection conduit disposed internal...http://www.google.com/patents/US8066063?utm_source=gb-gplus-sharePatent US8066063 - Capillary injector
Publication number US8066063 B2
Application number US 12/441,119
PCT number PCT/US2007/078436
Also published as EP2061948A2, EP2061948B1, EP2061948B8, US20090266542, WO2008034024A2, WO2008034024A3
Publication number 12441119, 441119, PCT/2007/78436, PCT/US/2007/078436, PCT/US/2007/78436, PCT/US/7/078436, PCT/US/7/78436, PCT/US2007/078436, PCT/US2007/78436, PCT/US2007078436, PCT/US200778436, PCT/US7/078436, PCT/US7/78436, PCT/US7078436, PCT/US778436, US 8066063 B2, US 8066063B2, US-B2-8066063, US8066063 B2, US8066063B2
Inventors Ian Donald, John Reid, Manish Vyas
Patent Citations (207), Non-Patent Citations (182), Referenced by (8), Classifications (17), Legal Events (2)
US 8066063 B2
Referring now to FIG. 2, this shows a horizontal style subsea tree 1 a, which is similar to the tree 1 shown in FIG. 1, but has a different arrangement of valves to control the flow of production fluids. Typically, the horizontal style tree 1 a has a single wing valve 4 v, and a number of production bore plugs 3 p installed within the production bore 3 above the wing branch 4 and below the tree cap 5. The configuration of the choke 6, the wing branch 4, and the wellhead 2 are identical to that disclosed for the well of FIG. 1. The capillary conduit 8 in the FIG. 2 well terminates within a plug 7 p that is located within the production bore 3 below the wing branch 4, but above the wellhead 2. The plug 7 p, as previously described provides an axial termination of the capillary conduit 8 within the production bore 3, and provides a lateral injection port 7 extending through the side wall of the production bore 3. In use, the chemicals injected into the tree 1 a are injected into the port 7 and through the side wall of the production bore 3, and enter the capillary conduit 8 at the plug 7 p.
FIG. 3 describes a different design of subsea well embodying a capillary injection conduit system. The FIG. 3 well is a typical horizontal tree 10, with the tree plugs 3 p having been pulled, the tree cap 5 removed, and a specialized tree cap adapter 15 installed for facilitating the injection of chemicals into the well through the tree 10. The tree 10 is mounted on the wellhead 12 and has a production bore 13 connected to production tubing leading to the formation F as previously described. The production bore 13 has a wing branch 14 with a wing branch valve 14 v, and a choke 16 as previously described for the take off of production fluids. The production bore 13 is capped by a tree cap adapter 15 in the form of a cylindrical body 15 a with a pair of plugs 15 p that occlude the bore of the body 15 a, and a cap 15 c, that can optionally be removed to allow access to the plugs 15 p and the bore 15 b of the body 15, and the production bore 13. The central bore 15 b of the body 15 a has a conduit through its side wall leading to a port 17 for the injection of chemicals through the side wall conduit and into the bore 15 b of the body 15 a, which is coaxial with, and a continuation of, the production bore 13. The bore 15 b of the body 15 a has a plug 18 p that terminates the end of a capillary conduit 18 extending from the plug 18 p downwards through the bore 15 b of the body 15 a, and the production bore 13 of the tree 10. In certain embodiments, the capillary conduit 18 is at least substantially or entirely made of titanium or another suitable material. The capillary conduit 18 extends the length of the well and terminates at its lower end within the production bore 13 in the area of the formation F to be treated, typically in the area of the perforated casing at the heal of the well.
In operation of the FIG. 3 embodiment, chemicals to treat the formation are injected into the port 17, and transfer through the side wall conduit into the bore 15 b of the body 15 a. They them pass through the plug 18 p and capillary conduit 18 into the area of the formation F to be treated. Production fluids are recovered from the production bore in the normal way, which is closed off above the wing branch 14 by means of the plug 18 p, and by emergency plugs 15 p.
Referring now to FIG. 4, this illustrates a similar application to a traditional vertical subsea well similar to that shown in FIG. 1 with the production bore valves V removed. The FIG. 4 tree 20 is located on a wellhead 22, and has a production bore 23, a wing branch 24, a choke 26, and a tree cap 15 similar to the tree cap adapter 15 shown in FIG. 3, but with valves 15 v instead of plugs 15 p. The tree 20 has a capillary conduit 18 terminating in a plug 18 p within the bore 15 b of the body 15 a as previously described, but typically the capillary conduit 18 is surrounded by a perforated cylindrical tube 25 permitting the flow of production fluid from the production bore 23 into the wing branch 24 for recovery as normal, but protecting the capillary conduit 18 from damage by the valves, which may either be removed or remain in place but held open by the tubing 25. With the FIG. 4 embodiment, chemicals used to treat the formation F are injected through the port 17, through the side wall conduit and into the bore 15 b of the body 15 a, and through the capillary conduit 18 as previously described, whereas production fluids are gathered from the production tubing into the production bore 23, from where they can flow either inside or outside of the tubing 25 and are diverted into the wing branch 24 for recovery by means of the plug 18 p, with provision for containment by the valves 15 v and the cap 15 c.
FIG. 5 shows a further embodiment based on a horizontal style of subsea tree 30 similar to that shown in FIG. 2. The tree 30 is secured above a wellhead 32, and has a production bore 33, a wing branch 34 from which the valve has been removed, and a cap 35 installed above two production bore plugs 33 p to contain the production fluids within the tree 30.
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U.S. Classification 166/88.4, 166/95.1, 166/368
Cooperative Classification Y02P10/234, E21B33/068, E21B17/20, C22B7/006, E21B33/038, E21B37/06, C22B3/02
European Classification C22B7/00D, E21B33/038, E21B17/20, E21B33/068, C22B3/02, E21B37/06
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:DONALD, IAN;REID, JOHN;VYAS, MANISH;REEL/FRAME:022387/0462;SIGNING DATES FROM 20090311 TO 20090312
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:DONALD, IAN;REID, JOHN;VYAS, MANISH;SIGNING DATES FROM 20090311 TO 20090312;REEL/FRAME:022387/0462