CN115822572B - Oil gas exploration device with stratum pressure detection function - Google Patents
Oil gas exploration device with stratum pressure detection function Download PDFInfo
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- CN115822572B CN115822572B CN202310126241.XA CN202310126241A CN115822572B CN 115822572 B CN115822572 B CN 115822572B CN 202310126241 A CN202310126241 A CN 202310126241A CN 115822572 B CN115822572 B CN 115822572B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The invention discloses an oil-gas exploration device with stratum pressure detection function, which relates to the technical field of oil-gas drilling, and comprises: a hollow tube body; the upper air receiving seat is communicated with the upper end of the hollow pipe main body, and the hollow pipe main body is buried in the drill hole; the hanging sealer is fixed on the hollow pipe main body and positioned below the upper air receiving seat, and can seal and plug the drilling hole; the circulating exhaust assembly is communicated with the hollow pipe main body and is used for circularly exhausting drilling oil gas; the vibration tube adjusting assemblies are symmetrically arranged at two ends of the circulating exhaust assembly, are fixed with the hollow tube main body, and are tightly buried in the drill holes; the external pipe group is vertically erected above the circulating exhaust assembly, and the temperature control device is arranged below the hanging sealer on the hollow pipe main body.
Description
Technical Field
The invention belongs to the technical field of oil and gas drilling, and particularly relates to an oil and gas exploration device with a stratum pressure detection function.
Background
At present, accurate formation pressure is extremely important for drilling safety, and mastering the formation pressure can lead the user to take the lead in overflow discovery and treatment, so that accidents such as blowout and the like are avoided. In the prior art, the gas meter detects that under severe drilling conditions such as lost circulation, the drilled oil and gas reservoir is polluted, so that the influence on the natural gas reservoir is large, the gas reservoir is easy to press, the gas meter cannot detect abnormal gas measurement, oil and gas cannot be discharged in the gas testing process, and the formation pressure cannot be accurately detected.
Accordingly, one skilled in the art would be able to provide an oil and gas exploration device with formation pressure detection to address the problems set forth in the background above.
Disclosure of Invention
In order to achieve the above purpose, the present invention provides the following technical solutions: an oil and gas exploration device with formation pressure detection function, comprising:
a hollow tube body;
the upper air receiving seat is communicated with the upper end of the hollow pipe main body, and the hollow pipe main body is buried in the drill hole;
the hanging sealer is fixed on the hollow pipe main body and positioned below the upper air receiving seat, and can seal and plug a drilling hole;
the circulating exhaust assembly is communicated with the hollow pipe main body and is used for circulating and exhausting drilling oil gas;
the vibration tube adjusting assemblies are symmetrically arranged at two ends of the circulating exhaust assembly and are fixed with the hollow tube main body, and the vibration tube adjusting assemblies are tightly buried in the drill holes; and
the external pipe group is vertically erected above the circulating exhaust assembly, and a temperature control device is arranged below the hanging sealer on the hollow pipe main body.
Further, preferably, the circulating exhaust assembly includes:
an outer connecting pipe body;
the central tube is fixed in the external tube body, the middle part of the central tube is sleeved with an outer ring bin, and the outer ring bin is communicated with the central tube;
the air inlet pipe is connected in the hollow pipe main body in a penetrating way, and one end of the air inlet pipe is communicated with the outer ring bin;
the converging cavity is arranged in the central tube, and inner shaft tubes are symmetrically arranged on two sides of the converging cavity;
the sealing cavity seats are arranged in two and are symmetrically fixed in the external tube body left and right, and each sealing cavity seat is correspondingly communicated with the inner shaft tube;
the guide page is arranged in the sealing cavity seat in a relatively rotatable manner, a driving motor is arranged in the external tube body, and the output end of the driving motor is connected with the guide page through a transmission belt for transmission; and
the outer ring seat is fixed on the outer connecting pipe body, a plurality of discharging channels are formed in the sealing cavity seat, and the discharging channels are correspondingly communicated with the outer ring seat; the outer ring seat is arranged into a double-layer pipe body structure, and a plurality of air flow holes are formed in the outer ring seat.
Further, preferably, the air inlet pipe is communicated with an external air tank, and hydrocarbon compound gas is stored in the external air tank.
Further, preferably, the outer ring bin is further communicated with an inner connecting pipe, a plurality of guide and delivery cavities are circumferentially distributed on the outer connecting pipe body at the positions of the sealing cavity seats, the guide and delivery cavities are eccentrically and rotatably provided with discharge and delivery blades, the guide and delivery cavities are correspondingly provided with an air inlet end and an air outlet end, the air outlet ends are respectively communicated with branch pipe fittings, and each branch pipe fitting is communicated with the inner connecting pipe through a control valve.
Further, preferably, the external tube group includes: go up takeover, intermediate pipe and takeover down, go up the lower extreme of takeover with the distance of circulation exhaust assembly is D1, the lower extreme of intermediate pipe with the distance of circulation exhaust assembly is D2, the lower extreme of takeover with the distance of circulation exhaust assembly is D3, and D1 is greater than D2, and D2 is greater than D3, the intermediate pipe is kept away from the one end of circulation exhaust assembly is connected with the air current pipe.
Further, preferably, the vibrating tube adjusting assembly includes:
an outer shaft tube;
the side joint assemblies are symmetrically fixed on two sides of the circulating exhaust assembly;
the limiting springs are circumferentially distributed outside the side joint sleeve member, and one end of the side joint sleeve member extends into the outer shaft tube;
the positioning ring frame is arranged in the outer shaft tube in a sliding manner, and can be in sliding sleeve joint with the side joint sleeve piece; and
the vibration pulling device is arranged in the outer shaft tube, a guide rod is fixed on the circulating exhaust assembly, and one end of the guide rod is connected with the vibration pulling device.
Further, preferably, the vibration stirring device includes:
the plurality of outer driving frames are circumferentially arranged, a plurality of air pressure cavities are uniformly formed in each outer driving frame, and guide plugs are slidably arranged in the air pressure cavities;
the connecting shaft piece is arranged at the center of the outer driving frame, is rotationally connected with the guide rod through a ball shaft, and is connected with the guide plug through a corresponding transmission rod;
the liquid inlet end and the liquid outlet end are correspondingly arranged at each air pressure cavity.
Compared with the prior art, the invention has the beneficial effects that:
the circulating exhaust assembly can realize oil-gas circulating mixed flow in a drilling hole, so that gas measurement failure caused by blockage of a hydrocarbon reservoir is avoided; particularly, hydrocarbon compound gas is injected into a drilled hole, and is completely mixed into oil gas in the drilled hole under the condition of circulating exhaust by a circulating exhaust assembly, so that the formation pressure can be monitored in real time only by monitoring the concentration and flow of the hydrocarbon compound gas;
the vibrating tube adjusting component is also arranged in the invention, so that the hydrocarbon compound gas can be assisted to completely infiltrate into the stratum, and the external tube group can perform air extraction detection on the seepage range of the hydrocarbon compound gas at the moment, so as to grasp the overall flow condition of the hydrocarbon compound gas.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic view of a circulating exhaust assembly according to the present invention;
FIG. 3 is a schematic view of the structure of the guide chamber according to the present invention;
FIG. 4 is a schematic view of an external tube set according to the present invention;
FIG. 5 is a schematic view of a vibrating tube adjusting assembly according to the present invention;
FIG. 6 is a schematic diagram of a vibration damper according to the present invention;
in the figure: 1. a hollow tube body; 11. an upper air connecting seat; 12. suspending the sealer; 2. a vibrating tube adjusting assembly; 21. a side joint sleeve; 22. an outer shaft tube; 23. a positioning ring frame; 24. a limit spring; 25. a guide rod; 3. a cyclical exhaust assembly; 31. an outer connecting pipe body; 32. a central tube; 33. a converging cavity; 34. an outer ring bin; 35. an air inlet pipe; 36. sealing the cavity seat; 37. a diversion page; 38. a driving motor; 381. a transmission belt; 39. an outer ring seat; 310. an inner shaft tube; 4. externally connecting a tube group; 41. an upper connecting pipe; 42. a middle tube; 43. a lower connecting pipe; 5. a guide cavity; 51. an inner connecting pipe; 52. discharging fan blades; 53. an air inlet end; 54. a branch pipe fitting; 6. a vibration-pulling device; 61. an outer driving frame; 62. a guide plug; 63. a connecting shaft member; 64. a transmission rod; 65. a liquid inlet end; 66. and a liquid discharge end.
Description of the embodiments
Referring to fig. 1 to 6, in an embodiment of the present invention, an oil and gas exploration apparatus with formation pressure detection function includes:
a hollow pipe body 1;
the upper air receiving seat 11 is communicated with the upper end of the hollow pipe main body 1, and the hollow pipe main body 1 is buried in a drill hole;
a hanging sealer 12 fixed on the hollow pipe main body 1 and positioned below the upper air receiving seat 11, wherein the hanging sealer 12 can seal and seal a drilling hole;
the circulating exhaust assembly 3 is communicated with the hollow pipe main body 1 and is used for circulating and exhausting drilling oil gas;
the vibration tube adjusting assemblies 2 are symmetrically arranged at two ends of the circulating exhaust assembly 3 and are fixed with the hollow tube main body 1, and the vibration tube adjusting assemblies 2 are tightly buried in a drill hole; and
the external pipe group 4 is vertically erected above the circulating exhaust assembly 3, and a temperature control device (not shown in the figure) is arranged below the hanging sealer 12 on the hollow pipe main body 1, that is, the temperature in the drill hole is adjusted through the temperature control device, and meanwhile, the injection concentration of hydrocarbon compound gas is effectively controlled, and at the moment, the formation pressure is correspondingly measured, so that the formation pressure coefficient is conveniently calculated, and reference data is provided for subsequent continuous monitoring.
In this embodiment, the circulating exhaust assembly 3 includes:
an outer joint pipe body 31;
the central tube 32 is fixed in the external tube body 31, an outer ring bin 34 is sleeved in the middle of the central tube 32, and the outer ring bin 34 is communicated with the central tube 32;
the air inlet pipe 35 is connected in the hollow pipe main body 1 in a penetrating way, and one end of the air inlet pipe 35 is communicated with the outer ring bin 34;
a converging cavity 33, which is arranged in the central tube 32, wherein inner shaft tubes 310 are symmetrically arranged at two sides of the converging cavity 33;
the number of the sealing cavity seats 36 is two, the two sealing cavity seats 36 are symmetrically fixed in the external tube body 31, and each sealing cavity seat 36 is correspondingly communicated with the inner shaft tube 310;
the guide vane 37 is rotatably arranged in the sealing cavity seat 36, a driving motor 38 is arranged in the external tube body 31, and the output end of the driving motor 38 is connected with the guide vane 37 through a transmission belt 381 for transmission; the guide vane 37 can convey the gas in the converging cavity 33 into the sealing cavity seat 36 under rotation, and
the outer ring seat 39 is fixed on the outer tube body 31, the sealing cavity seat 36 is provided with a plurality of discharging channels, and the discharging channels are correspondingly communicated with the outer ring seat 39; the outer ring seat 39 is configured as a double-layer pipe body structure, and a plurality of air flow holes are arranged on the outer ring seat 39.
As a preferred embodiment, the air inlet pipe 35 is communicated with an external air tank, and hydrocarbon compound gas is stored in the external air tank, that is, the air inlet pipe 35 can preferentially convey hydrocarbon compound gas with a certain concentration to the converging cavity 33, and the hydrocarbon compound gas is respectively conveyed to each sealing cavity seat 36 by the inner shaft pipe 310, so that the gas flow holes on the outer ring seat 39 introduce into the inner wall of the drill hole, and the hydrocarbon compound gas seepage is realized.
In this embodiment, the outer ring bin 34 is further connected to an inner pipe 51, a plurality of guiding chambers 5 are circumferentially distributed on the outer pipe body 31 at the sealing chamber seats 36, the guiding chambers 5 are eccentrically and rotatably provided with a discharging fan blade 52, the guiding chambers 5 are correspondingly provided with an air inlet end 53 and an air outlet end, the air inlet end 53 is connected to the outer pipe body 31, so that the oil gas in the drilled hole can enter the guiding chambers 5 through the air inlet end 53, the air outlet ends are all communicated with branch pipe members 54, each branch pipe member 54 is communicated with the inner pipe 51 through a control valve, especially when the injection amount of hydrocarbon compound gas reaches a threshold value, the air inlet pipe is closed, the discharging fan blade in the guiding chambers 5 rotates, the oil gas can enter the guiding chambers 5 from the air inlet end 53 and is conveyed to the inner pipe 51 through the air outlet end, the inner pipe 51 is led into the converging chamber 33, the sealing chamber seats 36 can realize gas discharging through the air flow holes on the outer ring seat 39 again, so that the circulating mixed pressure can be detected, and the pressure of the drilled hole can be fully obtained.
In this embodiment, the external tube set 4 includes: the device comprises an upper connecting pipe 41, a middle pipe 42 and a lower connecting pipe 43, wherein the distance between the lower end of the upper connecting pipe 41 and the circulating exhaust assembly 3 is D1, the distance between the lower end of the middle pipe 42 and the circulating exhaust assembly 3 is D2, the distance between the lower end of the lower connecting pipe 43 and the circulating exhaust assembly 3 is D3, D1 is larger than D2, D2 is larger than D3, and one end, far away from the circulating exhaust assembly 3, of the middle pipe 42 is connected with a gas flow pipe, that is, the upper connecting pipe, the middle pipe and the lower connecting pipe can respectively carry out gas extraction detection on hydrocarbon compound gases in oil gas, and meanwhile, the middle pipe 42 can carry out subsequent gas supplementing through the gas flow pipe when the concentration of the hydrocarbon compound gases is lower.
In this embodiment, the vibrating tube adjusting assembly 2 includes:
an outer shaft tube 22;
side connection sleeve members 21 symmetrically fixed at both sides of the circulating exhaust assembly 3;
the limiting springs 24 are circumferentially distributed outside the side joint sleeve 21, and one end of the side joint sleeve 21 extends into the outer shaft tube 22;
a positioning ring frame 23 slidably disposed in the outer shaft tube 22, the positioning ring frame 23 being slidably sleeved with the side fitting 21; and
the vibration pulling device 6 is arranged in the outer shaft pipe 22, a guide rod 25 is fixed on the circulating exhaust assembly 3, one end of the guide rod 25 is connected with the vibration pulling device 6, and in use, the positioning ring frame 23 is separated from the side joint sleeve member 21 in a sliding way.
As a preferred embodiment, the vibration-damping device 6 includes:
the outer driving frames 61 are multiple and are circumferentially arranged, a plurality of air pressure cavities are uniformly formed in each outer driving frame 61, and guide plugs 62 are slidably arranged in the air pressure cavities;
the connecting shaft piece 63 is arranged at the center of the outer driving frame 61, the connecting shaft piece 63 is rotationally connected with the guide rod 25 through a ball shaft, and the connecting shaft piece 63 is connected with the guide plug 62 through a corresponding transmission rod 64;
the liquid inlet end 65 and the liquid outlet end 66 are correspondingly arranged at each air pressure cavity, wherein the guide plugs 62 in each air pressure cavity are matched with the displacement to control the connecting shaft member 63 to correspondingly slide, so that the displacement of the main body of the circulating exhaust assembly 3 is realized, and the vibration pulling devices 6 at the two ends of the circulating exhaust assembly 3 can be in a reverse motion state, so that the self-vibration effect is improved.
When the positioning ring frame 23 is separated from the side joint sleeve member 21, the liquid is supplied to the air pressure cavities through the liquid inlet end on one of the outer driving frames, so as to push the guide plugs 62 to axially slide (the two air pressure cavities on the opposite sides of the outer driving frames are used for discharging liquid, the guide plugs 62 reversely slide, the air pressure cavities on the two sides of the outer driving frames are in flexible liquid supply and discharge states), and after the guide plugs 62 slide to the limit positions, the air pressure cavities reversely supply and discharge liquid, so that the connecting shaft member can perform clockwise or anticlockwise circular rotation movement under the push-pull action of the transmission rods 64, and the guide rods 25 can drive the circulating exhaust assembly 3 to move (namely perform radial displacement), and at the moment, the liquid supply and discharge periods of the air pressure cavities in the vibration pulling devices 6 on the two sides can be freely controlled, so that the self-vibration strength of the circulating exhaust assembly 3 can be adjusted; this is particularly advantageous when the circulation exhaust module 3 is mounted in an inclined state in the initial state.
Specifically, in abominable drilling environment (such as well leakage), circulation exhaust subassembly 3 buries in the drilling, the oil gas circulation of drilling department is relatively poor this moment, the intake pipe 35 in the circulation exhaust subassembly 3 is preferentially to its injection hydrocarbon compound gas of certain concentration, then circulation exhaust subassembly 3 realizes the circulation flow of drilling internal oil gas, external nest of tubes 4 can monitor hydrocarbon compound gas seepage flow condition, simultaneously shake tub adjusting part 2 can control circulation exhaust subassembly 3 self-oscillation, thereby supplementary oil gas fully flows, after standing for a period, can detect the oil gas pressure in the drilling, the data that detects promptly is stratum pressure data this moment, especially, adjust the drilling temperature through temperature control device, the corresponding measurement stratum pressure, thereby conveniently calculate stratum pressure coefficient, in order to provide reference data for follow-up continuous monitoring.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (5)
1. An oil and gas exploration device with stratum pressure detection function, characterized in that it includes:
a hollow pipe body (1);
the upper air connecting seat (11) is communicated with the upper end of the hollow pipe main body (1), and the hollow pipe main body (1) is buried in the drill hole;
a hanging sealer (12) which is fixed on the hollow pipe main body (1) and is positioned below the upper air receiving seat (11), wherein the hanging sealer (12) can seal and plug a drilling hole;
the circulating exhaust assembly (3) is communicated with the hollow pipe main body (1) and is used for circularly exhausting drilling oil gas;
the vibrating tube adjusting assemblies (2) are symmetrically arranged at two ends of the circulating exhaust assembly (3) and are fixed with the hollow tube main body (1), and the vibrating tube adjusting assemblies (2) are tightly buried in the drill holes; and
an external pipe group (4) is vertically erected above the circulating exhaust assembly (3), and a temperature control device is arranged below the hanging sealer (12) on the hollow pipe main body (1);
the circulating exhaust assembly (3) comprises:
an outer connecting pipe body (31);
the central tube (32) is fixed in the outer tube body (31), an outer ring bin (34) is sleeved in the middle of the central tube (32), and the outer ring bin (34) is communicated with the central tube (32);
the air inlet pipe (35) is connected in the hollow pipe main body (1) in a penetrating way, and one end of the air inlet pipe (35) is communicated with the outer ring bin (34);
the converging cavity (33) is arranged in the central tube (32), and inner shaft tubes (310) are symmetrically arranged on two sides of the converging cavity (33);
the sealing cavity seats (36) are arranged in two, the two sealing cavity seats (36) are symmetrically fixed in the external tube body (31) left and right, and each sealing cavity seat (36) is correspondingly communicated with the inner shaft tube (310);
the guide page (37) is arranged in the sealing cavity seat (36) in a relatively rotatable manner, a driving motor (38) is arranged in the external tube body (31), and the output end of the driving motor (38) is connected with the guide page (37) through a transmission belt (381) for transmission; and
the outer ring seat (39) is fixed on the outer connecting pipe body (31), a plurality of discharging channels are formed in the sealing cavity seat (36), and the discharging channels are correspondingly communicated with the outer ring seat (39); the outer ring seat (39) is of a double-layer pipe body structure, and a plurality of air flow holes are formed in the outer ring seat (39);
the outer ring bin (34) is further communicated with an inner connecting pipe (51), a plurality of guide cavities (5) are circumferentially distributed on the outer connecting pipe body (31) and located at the sealing cavity seats (36), discharge fan blades (52) are eccentrically arranged in the guide cavities (5) in a rotating mode, an air inlet end (53) and an air outlet end are correspondingly arranged on the guide cavities (5), branch pipe pieces (54) are communicated with the air outlet end, and each branch pipe piece (54) is communicated with the inner connecting pipe (51) through a control valve.
2. A hydrocarbon exploration device with formation pressure detection according to claim 1, characterized in that said inlet pipe (35) is in communication with an external tank, in which hydrocarbon gas is stored.
3. A hydrocarbon exploration device with formation pressure detection according to claim 1, characterized in that said external tube set (4) comprises: go up takeover (41), intermediate pipe (42) and take over (43) down, go up the lower extreme of takeover (41) with the distance of circulation exhaust subassembly (3) is D1, the lower extreme of intermediate pipe (42) with the distance of circulation exhaust subassembly (3) is D2, the lower extreme of takeover (43) with the distance of circulation exhaust subassembly (3) is D3, and D1 is greater than D2, D2 is greater than D3, the one end that intermediate pipe (42) kept away from circulation exhaust subassembly (3) is connected with the air current pipe.
4. A hydrocarbon exploration device with formation pressure detection according to claim 1, characterized in that said vibrating tube adjustment assembly (2) comprises:
an outer shaft tube (22);
the side joint sleeve pieces (21) are symmetrically fixed on two sides of the circulating exhaust assembly (3);
the limiting springs (24) are circumferentially distributed outside the side joint sleeve (21), and one end of the side joint sleeve (21) extends into the outer shaft tube (22);
the positioning ring frame (23) is arranged in the outer shaft tube (22) in a sliding manner, and the positioning ring frame (23) can be in sliding sleeve joint with the side joint sleeve member (21); and
the vibration pulling device (6) is arranged in the outer shaft tube (22), a guide rod (25) is fixed on the circulating exhaust assembly (3), and one end of the guide rod (25) is connected with the vibration pulling device (6).
5. A hydrocarbon exploration device with formation pressure detection according to claim 4, characterized in that said vibration-pulling device (6) comprises:
the outer driving frames (61) are multiple and are circumferentially arranged, a plurality of air pressure cavities are uniformly formed in each outer driving frame (61), and guide plugs (62) are slidably arranged in the air pressure cavities;
the connecting shaft piece (63) is arranged at the center of the outer driving frame (61), the connecting shaft piece (63) is rotationally connected with the guide rod (25) through a ball shaft, and the connecting shaft piece (63) is connected with the guide plug (62) through a corresponding transmission rod (64);
the liquid inlet end (65) and the liquid outlet end (66) are correspondingly arranged at each air pressure cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310126241.XA CN115822572B (en) | 2023-02-17 | 2023-02-17 | Oil gas exploration device with stratum pressure detection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310126241.XA CN115822572B (en) | 2023-02-17 | 2023-02-17 | Oil gas exploration device with stratum pressure detection function |
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| Publication Number | Publication Date |
|---|---|
| CN115822572A CN115822572A (en) | 2023-03-21 |
| CN115822572B true CN115822572B (en) | 2023-04-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310126241.XA Active CN115822572B (en) | 2023-02-17 | 2023-02-17 | Oil gas exploration device with stratum pressure detection function |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU761499C (en) * | 1997-03-25 | 2003-12-11 | Halliburton Energy Services, Inc. | Subsurface measurement apparatus, system and process for improved well drilling, control, and production |
| GB2377466B (en) * | 2000-03-02 | 2004-03-03 | Shell Int Research | Wireless downhole measurement and control for optimizing gas lift well and field performance |
| US7178392B2 (en) * | 2003-08-20 | 2007-02-20 | Schlumberger Technology Corporation | Determining the pressure of formation fluid in earth formations surrounding a borehole |
| CA2890987C (en) * | 2011-12-15 | 2018-03-27 | Raise Production Inc. | Horizontal and vertical well fluid pumping system |
| US10316640B2 (en) * | 2016-01-19 | 2019-06-11 | Nabors Drilling Technologies Usa, Inc. | Systems and methods for pressure testing well control equipment |
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