Patent Description:
ESPs may be equipped with sensors to determine various operational parameters. In one type of system, a gauge unit is at a lower end of the motor. The gauge unit has a pressure sensor and a temperature sensor for monitoring the pressure and temperature of the motor lubricant in the motor. The sensors may be powered and communicate with a controller at the upper end of the well. The power and communication may be accomplished by superimposing power requirements and data on the three conductors of the power cable. Alternately, a dedicated instrument wire may extend from the controller to the gauge unit.

Because of the long length of an ESP, which could exceed <NUM> feet, the ESP is made up of modules brought separate from each other to the wellsite. For example, the motor connects to the seal section with an adapter, and the seal section connects to the pump with an adapter. Sometimes motors, seal sections and pumps are connected in tandem arrangements with adapters. Because of the separate modules, it is challenging to reliably place sensors or other electronic devices in modules other than the motor and gauge unit module.

<CIT> discloses a prior art electrical submersible well pump for installation in a well, comprising: a motor, a seal section and a pump; a motor electrical connector mounted to an exterior of the motor; a motor sensor in an interior of the motor and connected to an interior side of the motor electrical connector; a seal/motor adapter on an end of the seal section, an external pump jumper wire having one end electrically connected to the motor, running along an exterior side of the pump and having another end connected to a discharge head of the ESP.

An electrical submersible well pump (ESP) for installation in a well comprises a motor, a seal section and a pump. A motor electrical connector mounts to an exterior of the motor. A motor sensor in an interior of the motor connects to an interior side of the motor electrical connector. A seal/motor adapter on an end of the seal section has a threaded arrangement for connecting the seal section to the motor. Seal first and second electrical connectors mount to an exterior of the seal/motor adapter, each having an exterior side and an interior side. A seal intemal wire within the seal section electrically connects the interior sides of the seal first and second electrical connectors together. An external motor jumper wire has one end electrically connected to the exterior side of the motor electrical connector. The motor jumper wire extends alongside the motor and has another end connected to the exterior side of the seal first electrical connector. A pump/seal adapter on an end of the pump has a threaded arrangement for connecting the pump to the seal section. A pump electrical connector having an exterior side and an interior side mounts to an exterior of the pump/seal adapter. A pump sensor within an interior of the pump is electrically connected to the interior side of the pump electrical connector. An external seal jumper wire has one end electrically connected to the exterior side of the seal second electrical connector. The seal jumper wire extends alongside the seal section and has an opposite end connected to the exterior side of the pump electrical connector. The motor sensor and the pump sensor are linked together through the motor jumper wire and the seal section jumper wire.

A controller for placement adjacent a wellhead of a well in which the ESP is installed supplies power to and addresses the motor sensor and the pump sensor.

In one embodiment, a slip ring arrangement located between the seal first and second electrical connectors and the internal wire in the seal section enables the seal/motor adapter to be secured to the seal section by rotation without twisting the seal internal wire.

More specifically, an adapter body configured for connection between the motor and the seal section has two electrical annular contacts mounted to the adapter body. The annular contacts are concentric with a longitudinal axis of the adapter body and one encircles the other. One of the annular contacts is electrically connected with the interior side of the seal first electrical connector. The other of the annular contacts is electrically connected with the interior side of the seal second electrical connector. An insert member has threads that secure by rotation of the insert member to threads within the seal section. Two slip rings are on the insert member, one encircled by the other. Each of the slip rings engages one of the annular contacts when the insert member engages the adapter body. One of the slip rings electrically connects to one end of the internal wire in the seal section. The other of the slip rings electrically connects to the other end of the internal wire.

A power cable extends to the motor from the upper end of a well in which the ESP is installed. The power cable has three power conductors for supplying three phase power to the motor. In one embodiment, at least two supplemental power wires connect to lower ends of the power conductors. A supplemental power supply connects to the supplemental power wires. The supplemental power supply connects to the motor electrical connector. At least one electronic device mounts selectively in the motor, the seal section or the pump for performing a function other than sensing. The supplemental power supply powers the electronic device.

In the example shown, a seal sensor located within the seal section electrically connects into the seal internal wire.

While the disclosure will be described in connection with the preferred embodiments, it will be understood that it is not intended to limit the disclosure to that embodiment. On the contrary, it is intended to cover all alternatives, modifications, and equivalents, as may be included within the scope of the invention as defined by the appended claims.

The method and system of the present disclosure will now be described more fully hereinafter with reference to the accompanying drawings in which embodiments are shown. The method and system of the present disclosure may be in many different forms and should not be construed as limited to the illustrated embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey its scope to those skilled in the art. In an embodiment, usage of the term "about" includes +/- <NUM>% of the cited magnitude. In an embodiment, usage of the term "substantially" includes +/- <NUM>% of the cited magnitude. The terms "upper," "lower" and the like are used only for convenience.

It is to be further understood that the scope of the present disclosure is not limited to the exact details of construction, operation, exact materials, or embodiments shown and described, as modifications and equivalents will be apparent to one skilled in the art. In the drawings and specification, there have been disclosed illustrative embodiments and, although specific terms are employed, they are used in a generic and descriptive sense only and not for the purpose of limitation.

Referring to <FIG>, ESP <NUM> has a motor <NUM>, normally a three-phase AC motor. In this example, a gauge unit <NUM> secures to the lower end of motor <NUM>. Gauge unit <NUM> is adapter that contains electronics for monitoring the health of ESP <NUM> during operation, and optionally causing certain control functions to be performed. A seal section <NUM> connects to the upper end of motor <NUM> with a seal section or seal/motor adapter <NUM>. Seal section <NUM> seals around the drive shaft assembly of motor <NUM>. Also, seal section <NUM> may contain a pressure equalizer, such as a bag or bellows to reduce a pressure differential between well fluid on the exterior and the dielectric lubricant that fills motor <NUM>.

A pump <NUM> with a well fluid intake <NUM> connects to the upper end of seal section <NUM> with a pump/seal adapter <NUM>. Pump <NUM> may be centrifugal pump having a large number of stages, each stage comprising a rotating impeller and a non-rotating diffuser. Alternately, pump <NUM> could be another type, such as a progressing cavity pump. In this example, pump <NUM> has a discharge adapter <NUM> on its upper end that connects to production tubing <NUM> for discharging well fluid in tubing <NUM>. Instead of production tubing <NUM>, a string of coiled tubing could support ESP <NUM>; in that instance, motor <NUM> would be on the upper end of ESP <NUM> and pump <NUM> on the lower end. Pump <NUM> would discharge well fluid into an annulus surrounding the coiled tubing.

A power cable <NUM> extends downward alongside production tubing <NUM> and has an electrical connector <NUM> on its lower end that connects to an upper end of motor <NUM>. The upper end of power cable <NUM> connects to a controller <NUM> that is adjacent a wellhead of the well. Controller <NUM> supplies three-phase power to motor <NUM> via power cable <NUM>. If coiled tubing is employed, power cable <NUM> would be located in the coiled tubing instead of strapped to the exterior of production tubing <NUM>.

In the example of <FIG>, a dedicated, separate instrument line <NUM> extends into the well from controller <NUM> and connects to gauge unit <NUM>. Instrument line <NUM> provides the power and communication link for gauge unit <NUM>. Data packets <NUM> concerning the health of ESP <NUM> are transmitted over instrument line <NUM> between controller <NUM> and gauge unit <NUM>. Each data packet <NUM> has an address for one of the sensors in ESP <NUM>.

ESP <NUM> could have other modules in addition to motor <NUM>, seal section <NUM> and pump <NUM>. For example, there could be tandem motors, tandem seal sections, and tandem pumps connected with adapters. Pump intake <NUM> could be in a separate module connected to pump <NUM> with an adapter. Also, a gas separator could be in a separate module mounted to the lower end of pump <NUM> with an adapter. In that instance, pump intake <NUM> would be in the gas separator. The various adapters <NUM>, <NUM> and <NUM> could be a type that bolts the various modules to each other. Alternately, adapters <NUM>, <NUM> and <NUM> could be threaded collar types.

In this embodiment, an external motor jumper wire <NUM> has a lower end at gauge unit <NUM> and an upper end at seal section adapter <NUM>. Motor jumper wire <NUM> extends alongside motor <NUM> and connects with electronics within gauge unit <NUM>. Similarly, a seal section jumper wire <NUM> connects to seal section adapter <NUM> and extends alongside seal section <NUM> to pump adapter <NUM>. The lower end of seal section jumper wire <NUM> is electrically connected to the upper end of motor jumper wire <NUM>. In this example, a pump jumper wire <NUM> has a lower end connected to pump intake adapter <NUM> and an upper end joining pump discharge adapter <NUM>. Pump jumper wire <NUM> has a lower end in electrical communication with seal section jumper wire <NUM> and extends alongside the exterior of pump <NUM>.

Jumper wires <NUM>, <NUM> and <NUM> provide a bus for electronics in gauge unit <NUM> to communicate with and power various sensors mounted in motor <NUM>, gauge unit <NUM>, seal section <NUM> and pump <NUM>. Jumper wires <NUM>, <NUM>, and <NUM> are configured to easily connect to adapters <NUM>, <NUM> and <NUM> when the various modules are being connected to each other at a well site.

Referring to <FIG>, ESP <NUM> is the same as in <FIG>, except it does not have a dedicated instrument line <NUM>. Instead controller <NUM> supplies power for gauge unit <NUM> and the various sensors over the three conductors of power cable <NUM>. Data packets <NUM> are also communicated between controller and gauge unit <NUM> over power cable <NUM>.

<FIG> is a sensor electrical schematic for exemplary sensors of ESP <NUM> of <FIG>, which has dedicated instrument line <NUM> leading to gauge unit <NUM>. The sensor electrical schematic of ESP <NUM> of <FIG> would appear the same, except for not having dedicated instrument line <NUM>. <FIG> illustrates a motor sensor <NUM> that is either in the interior of motor <NUM> on in gauge unit <NUM> but immersed in the motor lubricant that fills motor <NUM>. Motor sensor <NUM> senses the pressure and temperature of the motor lubricant in motor <NUM>. Motor <NUM> may have other sensors, such a vibration sensor, a dielectric lubricant sensor that determines any well fluid ingression into the motor lubricant, and a temperature sensor that senses the temperature of the windings in the stator.

One or more seal section sensors <NUM> may be in the interior of seal section <NUM> (<FIG>). Sensor <NUM>, for example, could monitor well fluid encroachment in the motor lubricant within the pressure equalizer of seal section <NUM>. One of more pump sensors <NUM> may be in the interior of pump <NUM> (<FIG>) for monitoring parameters such as well fluid intake pressure. One or more pump discharge sensors <NUM> may be in pump discharge adapter <NUM> (<FIG>) for monitoring well fluid parameters such as discharge pressure. More or fewer sensors may be employed in ESP <NUM>.

Additionally, motor <NUM>, seal section <NUM> and pump <NUM> could have electronic devices <NUM>, <NUM> that perform functions other than monitoring operating conditions. For example, the electronic devices may include solenoids to move a valve or a plug, or the electronic devices may include a cooling device for cooling certain components.

Sensors <NUM>, <NUM>, <NUM> and <NUM>, and electronic devices <NUM>, <NUM>, if employed, are each connected to a bus <NUM> in a daisy chain manner. Each sensor <NUM>, <NUM>, <NUM>, and <NUM> and electronic devices <NUM>, <NUM> communicate with controller <NUM> over bus <NUM>. Jumpers <NUM>, <NUM> and <NUM>, shown in <FIG>, and instrument line <NUM>, if employed, make up bus <NUM>. Controller <NUM> may supply power over instrument line <NUM> and bus <NUM> to sensors <NUM>, <NUM>, <NUM> and <NUM>. However, electronic devices <NUM>, <NUM> may require more power than the power that is available to operate sensors <NUM>, <NUM>, <NUM>, and <NUM>.

An optional supplemental power supply <NUM> in gauge unit <NUM> may supply power to electronic devices <NUM>, <NUM>, as well as sensors <NUM>, <NUM>, <NUM> and <NUM>, over a power line <NUM>. Each sensor <NUM>, <NUM>, <NUM> and <NUM>, as well as each electronic device <NUM>, <NUM> has a unique address for communicating with controller <NUM> over bus <NUM> and instrument line <NUM>. If an instrument line <NUM> is not employed, as in ESP <NUM> in <FIG>, the communication between controller <NUM> and the various sensors <NUM>, <NUM>, <NUM>, <NUM> and electronic devices <NUM>, <NUM> would be over power cable <NUM> (<FIG>).

<FIG> illustrates supplemental power supply <NUM> in more detail. Motor <NUM> has a stator <NUM> with motor wires or windings <NUM> wound through slots <NUM> (<FIG>). Power cable <NUM> has three power cable conductors <NUM>, and each conductor <NUM> is connected to a different phase of windings <NUM>. Two or more supplemental power supply wires <NUM> (three shown) extend through stator slots <NUM> (<FIG>) alongside and insulated from windings <NUM> (not shown in <FIG>). Each supplemental power supply wire <NUM> has an upper end connected to one of the three power cable conductors <NUM>. Each power supply wire <NUM> has a lower end connected to a separate bridge rectifier <NUM>. The DC output from the bridge rectifiers <NUM> joins the auxiliary power supply line <NUM>.

<FIG> also illustrates how data is transmitted and power supplied to sensors <NUM>, <NUM>, <NUM> and <NUM> when a dedicated instrument line <NUM> (<FIG>) is not employed. Windings <NUM> join each other in a Y-point or junction <NUM> at the lower end of stator <NUM>. Y-point <NUM> is at or near a zero voltage for the three phases of windings <NUM>. A line connects Y-point <NUM> to another bridge rectifier <NUM>. Controller <NUM> will provide instrument electrical power to power cable conductors <NUM> that is separated from the main power suppled over conductors <NUM> to operate motor <NUM>. That instrument power leads from Y-point <NUM> to bridge rectifier <NUM>, which in turn supplies a DC output to an electronics circuit <NUM>. Electronics circuit <NUM> provides power to and communication between sensors <NUM>, <NUM>, <NUM>, <NUM> and controller <NUM>. Electronics circuit <NUM> receives data packets from sensors <NUM>, <NUM>, <NUM>, <NUM> and transfers that information to controller <NUM> over power cable conductors <NUM>.

Referring to <FIG>, ESP <NUM> of <FIG> has an electrical connector <NUM> that connects to electronics in gauge unit <NUM> and optionally to a motor internal sensor <NUM> (<FIG>). The lower end of motor jumper wire <NUM> joins motor electrical connector <NUM>. Motor jumper wire <NUM> extends along the exterior of motor <NUM> and joins a seal section electrical connector 79a at seal section adapter <NUM>. Seal section jumper wire <NUM> joins a seal section electrical connector 79b and extends upward alongside seal section <NUM> to a pump intake electrical connector 81a on pump intake adapter <NUM>. Pump jumper wire <NUM> extends upward alongside pump <NUM> to a pump discharge electrical connector <NUM> on pump discharge adapter <NUM>. In <FIG>, dedicated instrument line <NUM> is illustrated as terminating at pump discharge electrical connector <NUM> rather than at the bottom of gauge unit <NUM>.

<FIG> schematically illustrates interior portions of seal section <NUM> and pump <NUM>. Seal section <NUM> has a tubular housing <NUM> with an interior <NUM> that may contain a pressure equalizer, such as a bag or bellows (not shown). The bag or bellows will have an inner side in fluid communication with dielectric lubricant from motor <NUM> (<FIG>) and an outer side exposed to well fluid. Seal section interior <NUM> may contain other components, such as a thrust bearing. A drive shaft <NUM> driven by motor <NUM> extends through seal section adapter <NUM> and seal section interior <NUM>. Motor jumper wire <NUM> will be electrically connected to seal section electrical connector 79a when seal section adapter <NUM> is secured to motor <NUM>. Seal section jumper wire <NUM> will be electrically connected to seal section electrical connector 79b either before or after motor jumper <NUM> connects to seal section electrical connector 79a.

A seal section internal wire <NUM> within seal section interior <NUM> electrically connects the interior sides of seal section electrical connectors 79a, 79b to each other. Also, if a seal section sensor <NUM> is employed, it will be connected to seal section interior wire <NUM>.

Pump <NUM> has a tubular housing <NUM> with an interior <NUM> that contains pumping components, such as impellers and diffusers (not shown). A drive shaft <NUM> driven by seal section shaft <NUM> extends through pump intake adapter <NUM> and pump interior <NUM>. The upper end of seal section jumper wire <NUM> will be electrically connected to electrical connector 81a when seal section <NUM> is secured to pump intake adapter <NUM>. Pump jumper wire <NUM> will have a lower end electrically connected to pump electrical connector 81b either before or after seal section jumper <NUM> connects to pump electrical connector 81a.

A pump internal wire <NUM> within pump interior <NUM> electrically connects the interior sides of pump intake connectors 81a, 81b to each other. Also, if a pump sensor <NUM> is employed, it will be connected to pump interior wire <NUM>.

<FIG> shows more details of seal section adapter <NUM>; pump intake adapter <NUM> (<FIG>) may be identical. Seal section adapter <NUM> has a tubular body <NUM> with a threaded arrangement for securing seal section <NUM> to motor <NUM> (<FIG>). In this example, the threaded arrangement includes a bolt hole flange <NUM> on its lower end for securing threaded bolts (not shown) to the upper end of motor <NUM> (<FIG>). Alternately, a rotatable collar could be employed instead of bolts to connect seal section <NUM> to motor <NUM>. A neck <NUM> of smaller diameter extends from bolt hole flange <NUM> to a larger diameter portion of body <NUM>. A neck downward facing shoulder <NUM> is at an upper end of neck <NUM>. A recess <NUM> extends partly around the upper portion of body <NUM>. Recess <NUM> has a recess downward facing shoulder <NUM> above neck shoulder <NUM>. The larger diameter portion of body <NUM> has a set of external threads <NUM> that engage internal threads <NUM> in seal section housing <NUM>.

A body slip ring <NUM> is mounted on an upper portion of body <NUM> coaxial with the bore extending through body <NUM>. Slip ring <NUM> comprises annular electrical contacts <NUM> (three shown) facing upward. Annular contacts <NUM> are concentric with the axis of seal adapter body <NUM>. Electrical leads <NUM> extend from seal section electrical connectors 79a, 79b through holes in body <NUM> to separate ones of the annular contacts <NUM> of slip ring <NUM>.

Seal section adapter <NUM> has an insert member <NUM> with a slip ring <NUM> with annular electrical contacts that mate with annular contacts <NUM> when seal section adapter <NUM> secures to seal section housing <NUM>. One of the annular contacts of insert member slip ring <NUM> is connected to seal section interior wire <NUM> by an electrical lead extending through holes in insert member <NUM>. The other end of seal section interior wire <NUM> connects to another of the annular contacts of slip ring <NUM> with an electrical lead.

Insert member <NUM> has external threads <NUM> that mate with seal section housing internal threads <NUM>. The axial dimension of insert member threads <NUM> is smaller than the axial dimension of seal section housing threads <NUM>, so that after insert member <NUM> is secured to seal section housing <NUM>, there will be room for adapter body external threads <NUM> to also engage seal section housing threads <NUM>. In this example, adapter body threads <NUM> have the same diameter as insert member threads <NUM>. The upper end of adapter body <NUM> abuts a downward facing shoulder of insert member <NUM> when both are tightened to seal section housing <NUM>.

Seal section electrical connector 79a includes an electrical feed through <NUM> that electrically joins the conductor in motor jumper <NUM> with lead <NUM> that connects to body slip ring <NUM>. Seal section electrical connector 79b has the same type of feed through <NUM> for electrically connecting seal section jumper wire <NUM> with another of the contacts <NUM> of body slip ring <NUM>.

Seal adapter <NUM> will normally be installed with seal section housing <NUM> at a factory or the like, then brought to a well site as a part of seal section <NUM>. When connecting seal section adapter <NUM> to seal section housing <NUM>, it is not necessary to rotationally orient seal section adapter <NUM> with seal section housing <NUM> because of slip rings <NUM>, <NUM>. Motor jumper wire <NUM> and seal section jumper wire <NUM> may be connected to seal section electrical connectors 79a, 79b at the well site. Electrical continuity will be established from motor jumper wire <NUM> to seal section jumper wire <NUM> via electrical feed through device <NUM> of electrical connector 79a, one of the leads <NUM>, one of the annular mating contacts of slip rings <NUM> and <NUM>, internal wire <NUM>, another of the annular contacts of slip rings <NUM>, <NUM>, the other lead <NUM>, the other feed through <NUM> and electrical connector 79b.

<FIG> shows an alternate embodiment for body <NUM> and insert member <NUM> of <FIG>. Insert member <NUM> in this embodiment has a bolt hole flange <NUM> that allows it to be bolted to seal section adapter body <NUM>. Adapter body <NUM> has bolt holes <NUM> that mate with the holes in flange <NUM>. Adapter body <NUM> does not have any external threads that engage housing internal threads <NUM>. The external threads <NUM> on insert member <NUM> connect adapter body <NUM> to seal section housing <NUM> when external threads <NUM> engage internal threads <NUM> and when adapter body <NUM> is bolted to insert member <NUM>. The other components of seal section adapter <NUM> in <FIG> are the same as in <FIG>.

<FIG> illustrates the exterior of adapter body <NUM> of <FIG>. Connectors 79a and 79b are located in recess <NUM> and secured to recess shoulder <NUM>. Recess <NUM> extends circumferentially less than <NUM> degrees.

<FIG> illustrate seal section electrical connector 79a; the other electrical connectors <NUM>, 79b and 81a, 81b (<FIG>) may be the same. Electrical connector 79a has a metal tubular member <NUM> with threads <NUM> on its upper end for connecting to recess shoulder <NUM> of seal section adapter <NUM>. Tubular member <NUM> has a bore <NUM>. Motor jumper wire <NUM>, as well as the seal section jumper wire <NUM> and pump jumper wire <NUM> (<FIG>), includes a metal or rigid sheath or tube <NUM>. An insulated wire (not shown) is contained in tube <NUM>.

As shown in <FIG>, two ferrules <NUM>, <NUM> receive tube <NUM> and slide into bore <NUM> in connector tubular member <NUM>. Ferrules <NUM>, <NUM> have external conical sealing surfaces <NUM>. The upper ferrule conical surface <NUM> faces upward and abuts a conical surface in tubular member bore <NUM>. The conical surface on lower ferrule <NUM> faces downward. A non-sealing spacer <NUM> locates between ferrules <NUM>, <NUM>.

A compression nut <NUM> has a conical sealing surface that abuts lower ferrule conical surface <NUM>, and when tightened to tubular member <NUM>, exerts a force through spacer <NUM> that deforms both ferrules <NUM>, <NUM>, causing them to seal between metal tube <NUM> and tubular member bore <NUM>. Spacer <NUM> does not deform or seal. The wire located in metal tube <NUM> has an electrode on its upper end that electrically engages an electrical contact in feedthrough <NUM> (<FIG>) by an upward push the preferred embodiment.

A test port <NUM> in tubular member <NUM> leads from bore <NUM> to the exterior at a point adjacent spacer <NUM>. Applying test pressure to port <NUM> enables the test pressure to be exerted in opposite directions on the two ferrules <NUM>, <NUM>. If no leakage is noted, a plug may be inserted into test port <NUM>.

Claim 1:
An electrical submersible well pump (ESP) (<NUM>) for installation in a well, comprising:
a motor (<NUM>), a seal section (<NUM>) and a pump (<NUM>);
a motor electrical connector (<NUM>) mounted to an exterior of the motor (<NUM>);
a motor sensor (<NUM>) in an interior of the motor (<NUM>) and connected to an interior side of the motor electrical connector (<NUM>);
a seal/motor adapter (<NUM>) on an end of the seal section (<NUM>), the seal/motor adapter (<NUM>) having a threaded arrangement (<NUM>) for connecting the seal section (<NUM>) to the motor (<NUM>); characterized by:
seal first and second electrical connectors (79a, 79b) mounted to an exterior of the seal/motor adapter (<NUM>), each of the seal first and second electrical connectors (79a, 79b) having an exterior side and an interior side;
a seal internal wire (<NUM>) within the seal section (<NUM>) that electrically connects the interior sides of the seal first and second electrical connectors (79a, 79b) together;
an external motor jumper wire (<NUM>) having one end electrically connected to the exterior side of the motor electrical connector (<NUM>), the motor jumper wire (<NUM>) extending alongside the motor (<NUM>) and having another end connected to the exterior side of the seal first electrical connector (79a);
a pump/seal adapter (<NUM>) on an end of the pump (<NUM>), the pump/seal adapter (<NUM>) having a threaded arrangement for connecting the pump (<NUM>) to the seal section (<NUM>);
a pump electrical connector (81a) mounted to an exterior of the pump/seal adapter (<NUM>), the pump electrical connector (81a) having an exterior side and an interior side;
a pump sensor (<NUM>) within an interior of the pump (<NUM>) and electrically connected to the interior side of the pump electrical connector (81a);
an external seal jumper wire (<NUM>) having one end electrically connected to the exterior side of the seal second electrical connector (79b), the seal jumper wire (<NUM>) extending alongside the seal section (<NUM>) and having an opposite end connected to the exterior side of the pump electrical connector (81a); and wherein
the motor sensor (<NUM>) and the pump sensor (<NUM>) are linked together through the motor jumper wire (<NUM>) and the seal section jumper wire (<NUM>).