US20150027728A1 - Live Well Staged Installation of Wet Connected ESP and Related Method - Google Patents
Live Well Staged Installation of Wet Connected ESP and Related Method Download PDFInfo
- Publication number
- US20150027728A1 US20150027728A1 US13/952,100 US201313952100A US2015027728A1 US 20150027728 A1 US20150027728 A1 US 20150027728A1 US 201313952100 A US201313952100 A US 201313952100A US 2015027728 A1 US2015027728 A1 US 2015027728A1
- Authority
- US
- United States
- Prior art keywords
- esp
- shaft
- assembly
- lift device
- lubricator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 238000000034 method Methods 0.000 title claims description 18
- 238000009434 installation Methods 0.000 title description 6
- 230000000712 assembly Effects 0.000 claims description 5
- 238000000429 assembly Methods 0.000 claims description 5
- 230000013011 mating Effects 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 description 4
- 239000012717 electrostatic precipitator Substances 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- QUTYKIXIUDQOLK-PRJMDXOYSA-N 5-O-(1-carboxyvinyl)-3-phosphoshikimic acid Chemical compound O[C@H]1[C@H](OC(=C)C(O)=O)CC(C(O)=O)=C[C@H]1OP(O)(O)=O QUTYKIXIUDQOLK-PRJMDXOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/07—Telescoping joints for varying drill string lengths; Shock absorbers
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
- E21B43/128—Adaptation of pump systems with down-hole electric drives
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B47/00—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps
- F04B47/06—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps having motor-pump units situated at great depth
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
- Emergency Protection Circuit Devices (AREA)
- Jet Pumps And Other Pumps (AREA)
- Earth Drilling (AREA)
- Suspension Of Electric Lines Or Cables (AREA)
- Cable Accessories (AREA)
Abstract
An ESP assembly is broken into subassemblies to fit through a lubricator for live well deployment. A lifting device has a shaft transmission feature and associated housing rotational lock for use at the top of the first subassembly and to be left in position for engagement of the next assembly. The subassemblies can be delivered on wireline or slickline. A wet connect can be at the lower end of the initial subassembly to connect to a cable run alongside the production tubing. The ESP subassemblies all are interconnected in the live well and function as they would if assembled at the surface. The ability to break down the assembly and run it in segments lets the components fit through a length limited lubricator for live well deployment.
Description
- The field of the invention is installation of electric submersible pumps and more particularly, devices that enable subassembly installation to fit into a lubricator for live well deployment.
- Electric submersible pumps (ESP) are used to increase bottom hole pressure to deliver produced fluids to a well surface. These pumps are multistage centrifugal pumps with the number of stages determined by the depth of the ESP and the properties of the pumped fluids and the well configuration. As wells get deeper, with improved drilling technologies, the number of stages needed to achieve desired production has necessarily increased. The additional horsepower to drive the added stages and obtain higher discharge pressures, also by necessity, increased the length of the motor associated with the ESP.
- In order to deploy ESPs in live wells utilizing wire line, the pump assembly has to pass through a lubricator. A lubricator is mounted on the well head at the surface. There are installations where the lubricator length is limited by the derrick height. Other installations may limit the lubricator length based on safety concerns or policy. Lubricator assemblies contain valves at opposed ends that can be sequentially operated to introduce the ESP components into the live well, such as with a wireline or slickline, when the bottom valve is opened and the wireline or slickline is delivered through a sealed connection near the top of the lubricator. Another more recent development is to mate a wet connect device on the lower end of the ESP assembly with the other half of the connection that is connected to a cable, run alongside the tubing that will convey the pumped fluids to the surface. This type of power/instrumentation connection has also added to the overall length of the assembly. Since there is a finite limit to the height of the lubricator supported in the derrick, or limited for safety reasons, it has become a problem to get extended length, higher horsepower, ESP assemblies inserted into live wells.
- It should be noted that coiled tubing, continuous rod and jointed rod or tubing could also be utilized to deploy these ESP systems with and without lubricator type equipment. While the lubricator type applications allow these installs on live wells, the same equipment can be used on wells that have been pressure equalized/neutralized or killed.
- The present invention addresses this problem with a solution that allows the overall ESP assembly to be broken down into subassemblies that will fit in a lubricator for staged deployment and final system assembly, at the downhole fixture located at or near the bottom of the production tubing. This downhole fixture being the socket portion of the wet connection device. Once run into the well, these staged subassemblies function as though the entire assembly was put together at the surface, as could be done before when the assemblies had smaller motors and fewer stages.
- Those skilled in the art will better appreciate the various aspects of the invention from a review of the detailed description of the preferred embodiment and the associated drawings while understanding that the full scope of the invention is to be determined by the appended claims.
- An ESP assembly is broken down into subassemblies to fit within a lubricator where a safe working length is required for live well deployment. A lifting device has a shaft transmission feature and associated housing rotational lock for use at the top of the first subassembly which is left in position for engagement of the next assembly. The subassemblies can be delivered on wireline or slickline. A wet connect can be at the lower end of the initial subassembly to connect to a cable run alongside the production tubing. The ESP subassemblies all are deployed and interconnected in the live well and function as they would if assembled at the surface. The ability to break down the assembly and run it in segments lets the components fit through a length limited lubricator for live well deployment.
-
FIG. 1 is a perspective view of the lift device to run in the first subassembly into production tubing; -
FIG. 2 shows the production tubing in cased hole, in section, illustrating the wet connect and screen at the lower end of the production tubing; -
FIG. 3 illustrates the first subassembly to be run into the production tubing with the other half of the wet connect at its lower end; -
FIG. 4 is a section view of the lift sub used at the top of the assembly inFIG. 2 to run it into the production tubing to mate with the wet connect at the lower end of the production tubing; -
FIG. 5 is the next subassembly to be run into the production tubing and includes the pump and lower end shaft extension to mate into the lift sub shown inFIG. 4 that is left in the production tubing; -
FIG. 6 is the last subassembly that includes a seal assembly for the production tubing; -
FIG. 7 is an anchor mounted above the seal assembly ofFIG. 6 . - Referring to
FIG. 2 , a borehole is shown withcasing 10 although an open hole is an alternative.Production tubing 12 is run into thecasing 10 and supports at its lower end ahalf 14 of a wet connection of a type known in the art. A cable for power and communication between the surface and thewet connect 14 is schematically illustrated. The assembly inFIG. 2 has the other half of the wet connect 20 at its lower end and is referred to as the socket portion of the wet connect. When thehalves cable 16. The assembly is retained by thelift device 26 that is shown in more detail inFIGS. 1 and 4 . As shown inFIG. 1 there is alift profile 28 where a slickline or wireline can be releasably attached in a manner known in the art. Apart from that there areanti-rotation lugs 32 in thehousing 30 that are engaged bysplines 34 shown at the lower end ofFIG. 5 on thecrossover assembly 35. Oncecrossover assembly 35 is landed ontolift device 26, axial load from the pump, 46 is transferred from 4-3, through 35, 26 and ultimately to the thrust bearing inside 24. - Thus, in operation, the
housing 30 does not rotate but theshaft coupling assembly 36 turns.Assembly 36 is supported onbearings male end 42 withspline 44 to engage a pump shaft that is not shown that extends out the lower end of theESP 46 shown inFIG. 5 . One ormore openings 48 are provided inhousing 30 to allow solids or other debris to pass out of thehousing 30 when it is run in with the assembly shown inFIG. 3 . The remainder of the assembly inFIG. 3 is a lower portion of amotor module module 22 that is rotationally locked at 50 to the remainder of themotor assembly -
Item 24 is the seal section component. This component provides an equalization function between the well bore pressures seen at depth and the internal pressure of theESP components seal component 24 also handles axial thrust to the ESP system created by the drivenpump assembly 46 while the system is energized. Theseal component 24 also protects themotor connection plug 20 from well bore fluid contamination. It is important to note that the assembly ofFIG. 3 must all be part of the same staged installation as they are all serviced/filled with a synthetic type of dielectric oil. - The motor shaft extends From 22 through 24 to
end 52 where an end spline meshes into the female splinedconnection 54 shown inFIG. 1 . The pump shaft, not shown is a female end that slips over themale end shaft 42 withsplines 44. In essence thelift device 26 serves as a coupling between the seal shaft atend 52, and thepump crossover 35 shaft to the pump intake shaft not shown that passes throughports 66 to the shaft inpump 46 that is not shown. - Once the assembly of
FIG. 2 has been deployed into theproduction tubing 12 ofFIG. 1 and the wet connectportions lift device 26 is released and the wireline or slickline is retrieved to the surface to allow the assembly ofFIG. 5 to be picked up and run into a live well through a lubricator that is not shown. In essenceFIG. 5 is theESP 46 that has a polished bore receptacle and an internal lifting profile not shown near itsupper end 56. The lifting profile allows running in theESP 46 and thecrossover assembly 35 in one trip through the lubricator. The wireline or slickline is again released so that another trip into the production tubing can be made with thesealing assembly 58, thenanchor assembly 60 that can be run in on a separate wire line run.Projections 62 positioned on the exterior and adjacent interior polished bore receptacle act to centralize the assembly. Theanchor 60 holds the assembly shown inFIGS. 3-7 inside theproduction tubing 10 to keep the assembled components fixed against thewet connection 14 at the lower end of theproduction tubing 10. - Those skilled in the art will appreciate the fact that the problem of limited length in a lubricator is addressed by the present invention that breaks down an overlong assembly into stages that are short enough to load into a lubricator with a length limit of about 25 meters allowing the assembly to be put together in the live well while still maintaining the safety systems that are there to prevent loss of well control. The first break location is at the motor drive shaft which is run in with the
lift device 26 in a way that the motor shaft is already coupled to the lift device that is left in the hole after the first trip to deliver the assembly ofFIG. 2 . After making contact with thewet connect 14 already at the bottom of theproduction tubing 10 the conveyance such as wireline or slickline is removed and the assembly ofFIG. 5 including theESP 46 is lifted and deployed. The pump shaft that is not shown connects to spline 44 on thelift sub shaft 42. The conveyance is again released leaving exposed the polished bore receptacle on thetop end 56 of theFIG. 5 assembly. Theseal assembly 58 can be run in with theanchor 60 or separately. A seal assembly at the lower end of 58 registers with the polished bore receptacle that is not shown. Externally, theseal assembly 58 divides the suction and discharge sides of theEPSP 46. Suction from the formation enters throughscreen 64 shown inFIG. 1 and passes throughinlets 66 shown inFIG. 5 . Discharge flow from theESP 46 passes through the sealingassembly 58 and theanchor 60 on up to the surface through theproduction tubing 12. - The problem that limits placement of ESP in a live well at depths where the length of the ESP and motor exceed the lubricator length is solved with the present invention. While the break locations in the ESP assembly can be selected at different component connections doing the breaking up at the connection of the motor shaft to the pump shaft allows more efficient use of the available length in these limited length lubricators. The incorporation of a shaft connector in the lift sub also allows having the break in the assembly at the connection between the motor and pump shafts. The other components above just push together and are finally anchored by
anchor 60. As the operating depth and pressure output demanded from ESPs increases the ability to get the entire assembly into a live well will no longer be limited by lubricator length can no longer be a limiting factor. Indeed in the deeper applications where more pump stages and motor horsepower are required would mean such assemblies could not be run into a live well without significant risks of blowout. The method of the present invention allows the safe downhole assembly in a live well of long ESPs that are wet connected in the hole. - The above description is illustrative of the preferred embodiment and many modifications may be made by those skilled in the art without departing from the invention whose scope is to be determined from the literal and equivalent scope of the claims below:
Claims (16)
1. A method of assembling an electric submersible pump (ESP) assembly in a live well that in the aggregate is longer than an available lubricator, comprising:
assembling subassemblies that are shorter than the lubricator at the surface of a borehole;
running in said subassemblies into the borehole through the lubricator;
assembling said subassemblies to each other in the borehole.
2. The method of claim 1 , comprising:
separating the motor driver from the ESP into separate assemblies.
3. The method of claim 2 , comprising:
using a lift device connected on one end to a motor/seal driveshaft when delivering the motor driver separately from said ESP system.
4. The method of claim 3 , comprising:
providing a connector shaft in said lift device connected on a lower end to said motor shaft.
5. The method of claim 4 , comprising:
rotationally locking said motor shaft to said connector shaft in said lift device.
6. The method of claim 5 , comprising:
engaging a pump shaft of said ESP to an opposite end of said connector shaft when the ESP assembly has passed through the lubricator.
7. The method of claim 6 , comprising:
rotationally locking a housing of said lift device to a housing of said ESP on assembly.
8. The method of claim 7 , comprising:
providing a male spline on an end of said connector shaft that engages the pump shaft and a female spline on the opposite end of said connector shaft that engages said motor shaft.
9. The method of claim 1 , comprising:
initially installing a wet connect adjacent a lower end of a production string in the borehole;
mating to said wet connect with the initial subassembly run into said production tubing.
10. The method of claim 9 , comprising:
running in the initial subassembly with a lift device at its upper end;
leaving said lift device in the production tubing for subsequent connection to the next delivered subassembly.
11. The method of claim 10 , comprising:
delivering subassemblies on wireline or slickline or tubing.
12. The method of claim 10 , comprising:
providing a lifting profile at an upper end of said lifting device.
13. The method of claim 10 , comprising:
using motor driver components as the first delivered subassembly.
14. The method of claim 13 , comprising:
connecting the ESP, as a second subassembly, to the lift device positioned above the first subassembly.
15. The method of claim 14 , comprising:
providing a connector shaft in said lift device to connect a motor shaft to a pump shaft.
16. The method of claim 15 , comprising:
rotationally locking a housing of said ESP pump to a housing on said lift device.
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/952,100 US20150027728A1 (en) | 2013-07-26 | 2013-07-26 | Live Well Staged Installation of Wet Connected ESP and Related Method |
BR112015030270A BR112015030270A2 (en) | 2013-07-26 | 2014-07-18 | live-stage wet connected electric submersible pump installation and related method |
CA2913214A CA2913214A1 (en) | 2013-07-26 | 2014-07-18 | Live well staged installation of wet connected esp and related method |
AU2014293448A AU2014293448A1 (en) | 2013-07-26 | 2014-07-18 | Live well staged installation of wet connected ESP and related method |
PCT/US2014/047242 WO2015013136A1 (en) | 2013-07-26 | 2014-07-18 | Live well staged installation of wet connected esp and related method |
ARP140102784A AR097074A1 (en) | 2013-07-26 | 2014-07-25 | INSTALLATION IN STAGES IN ACTIVE WELL OF SUBMERSIBLE ELECTRIC PUMPS WITH CONNECTION IN WET AND RELATED METHODS |
GB1520326.8A GB2531174A (en) | 2013-07-26 | 2014-07-28 | Live well staged installation of wet connected ESP and related method |
NO20151729A NO20151729A1 (en) | 2013-07-26 | 2015-12-16 | Live well staged installation of wet connected esp and related method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/952,100 US20150027728A1 (en) | 2013-07-26 | 2013-07-26 | Live Well Staged Installation of Wet Connected ESP and Related Method |
Publications (1)
Publication Number | Publication Date |
---|---|
US20150027728A1 true US20150027728A1 (en) | 2015-01-29 |
Family
ID=52389505
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/952,100 Abandoned US20150027728A1 (en) | 2013-07-26 | 2013-07-26 | Live Well Staged Installation of Wet Connected ESP and Related Method |
Country Status (8)
Country | Link |
---|---|
US (1) | US20150027728A1 (en) |
AR (1) | AR097074A1 (en) |
AU (1) | AU2014293448A1 (en) |
BR (1) | BR112015030270A2 (en) |
CA (1) | CA2913214A1 (en) |
GB (1) | GB2531174A (en) |
NO (1) | NO20151729A1 (en) |
WO (1) | WO2015013136A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20180320454A1 (en) * | 2016-01-13 | 2018-11-08 | Zilift Holdings, Limited | Method and apparatus for deploying wellbore pump on coiled tubing |
WO2022103401A1 (en) * | 2020-11-12 | 2022-05-19 | Halliburton Energy Services, Inc. | Thru-tubing conveyed pump system having a crossover coupling with polygonal coupling members |
WO2023278575A1 (en) * | 2021-06-29 | 2023-01-05 | Saudi Arabian Oil Company | Quick connection interface for electrical submersible pump components |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6059042A (en) * | 1996-01-24 | 2000-05-09 | Schlumberger Technology Corporation | Completions insertion and retrieval under pressure (CIRP) apparatus including the snaplock connector |
US6755244B1 (en) * | 1998-08-07 | 2004-06-29 | Asep Holding Bv | Lubricator |
US20080173441A1 (en) * | 2007-01-19 | 2008-07-24 | Pinnacle Technologies, Inc. | System and method for deploying one or more tools in a wellbore |
US20130062050A1 (en) * | 2010-05-18 | 2013-03-14 | Philip Head | Mating unit enabling the deployment of a modular electrically driven device in a well |
US20130098632A1 (en) * | 2011-10-24 | 2013-04-25 | Zeitecs B.V. | Gradational insertion of an artificial lift system into a live wellbore |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2326892B (en) * | 1997-07-02 | 2001-08-01 | Baker Hughes Inc | Downhole lubricator for installation of extended assemblies |
US6328111B1 (en) * | 1999-02-24 | 2001-12-11 | Baker Hughes Incorporated | Live well deployment of electrical submersible pump |
CA2364151A1 (en) * | 2001-11-28 | 2003-05-28 | L. Murray Dallas | Well stimulation and method of use |
US7845401B2 (en) * | 2008-03-27 | 2010-12-07 | Baker Hughes Incorporated | Telescoping wiper plug |
-
2013
- 2013-07-26 US US13/952,100 patent/US20150027728A1/en not_active Abandoned
-
2014
- 2014-07-18 CA CA2913214A patent/CA2913214A1/en not_active Abandoned
- 2014-07-18 WO PCT/US2014/047242 patent/WO2015013136A1/en active Application Filing
- 2014-07-18 AU AU2014293448A patent/AU2014293448A1/en not_active Abandoned
- 2014-07-18 BR BR112015030270A patent/BR112015030270A2/en not_active IP Right Cessation
- 2014-07-25 AR ARP140102784A patent/AR097074A1/en unknown
- 2014-07-28 GB GB1520326.8A patent/GB2531174A/en not_active Withdrawn
-
2015
- 2015-12-16 NO NO20151729A patent/NO20151729A1/en not_active Application Discontinuation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6059042A (en) * | 1996-01-24 | 2000-05-09 | Schlumberger Technology Corporation | Completions insertion and retrieval under pressure (CIRP) apparatus including the snaplock connector |
US6755244B1 (en) * | 1998-08-07 | 2004-06-29 | Asep Holding Bv | Lubricator |
US20080173441A1 (en) * | 2007-01-19 | 2008-07-24 | Pinnacle Technologies, Inc. | System and method for deploying one or more tools in a wellbore |
US20130062050A1 (en) * | 2010-05-18 | 2013-03-14 | Philip Head | Mating unit enabling the deployment of a modular electrically driven device in a well |
US20130098632A1 (en) * | 2011-10-24 | 2013-04-25 | Zeitecs B.V. | Gradational insertion of an artificial lift system into a live wellbore |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20180320454A1 (en) * | 2016-01-13 | 2018-11-08 | Zilift Holdings, Limited | Method and apparatus for deploying wellbore pump on coiled tubing |
US10605011B2 (en) * | 2016-01-13 | 2020-03-31 | Zilift Holdings Limited | Method and apparatus for deploying wellbore pump on coiled tubing |
WO2022103401A1 (en) * | 2020-11-12 | 2022-05-19 | Halliburton Energy Services, Inc. | Thru-tubing conveyed pump system having a crossover coupling with polygonal coupling members |
WO2023278575A1 (en) * | 2021-06-29 | 2023-01-05 | Saudi Arabian Oil Company | Quick connection interface for electrical submersible pump components |
US11773658B2 (en) | 2021-06-29 | 2023-10-03 | Saudi Arabian Oil Company | Quick connection interface for electrical submersible pump components |
Also Published As
Publication number | Publication date |
---|---|
AU2014293448A1 (en) | 2015-11-19 |
GB2531174A (en) | 2016-04-13 |
GB201520326D0 (en) | 2015-12-30 |
CA2913214A1 (en) | 2015-01-29 |
NO20151729A1 (en) | 2015-12-16 |
WO2015013136A1 (en) | 2015-01-29 |
BR112015030270A2 (en) | 2017-07-25 |
AR097074A1 (en) | 2016-02-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: BAKER HUGHES INCORPORATED, TEXAS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:TETZLAFF, STEVEN K.;ADAMS, DAN L.;MAY, DEWAYNE;AND OTHERS;REEL/FRAME:030885/0688 Effective date: 20130726 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |