CN113338905A - Pumping method and tubular column of horizontal well tester - Google Patents
Pumping method and tubular column of horizontal well tester Download PDFInfo
- Publication number
- CN113338905A CN113338905A CN202110639509.0A CN202110639509A CN113338905A CN 113338905 A CN113338905 A CN 113338905A CN 202110639509 A CN202110639509 A CN 202110639509A CN 113338905 A CN113338905 A CN 113338905A
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- China
- Prior art keywords
- pipe
- well
- instrument
- horizontal well
- pumping
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- 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.)
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Classifications
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- 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
- E21B47/00—Survey of boreholes or wells
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- 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
- E21B33/06—Blow-out preventers, i.e. apparatus closing around a drill pipe, e.g. annular blow-out preventers
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- 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
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
-
- 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
- E21B43/02—Subsoil filtering
- E21B43/08—Screens or liners
- E21B43/086—Screens with preformed openings, e.g. slotted liners
-
- 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
- E21B47/00—Survey of boreholes or wells
- E21B47/01—Devices for supporting measuring instruments on drill bits, pipes, rods or wirelines; Protecting measuring instruments in boreholes against heat, shock, pressure or the like
-
- 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
- E21B47/00—Survey of boreholes or wells
- E21B47/01—Devices for supporting measuring instruments on drill bits, pipes, rods or wirelines; Protecting measuring instruments in boreholes against heat, shock, pressure or the like
- E21B47/017—Protecting measuring instruments
Abstract
The invention discloses a pumping method and a pipe column of a horizontal well tester, and relates to the technical field of horizontal well testing. The pumping method comprises the following steps: the pipe column with the sieve pipe at the front end is put into the well bottom; setting an instrument in the pipe column; the pump truck injects water into the pipe column, and the instrument is pumped to the bottom of the well by using the water pressure. The pumping pipe column comprises a plug, a sieve pipe, two oil pipes, a short section, a plurality of oil pipes, a three-way valve and a blowout preventer which are sequentially connected from bottom to top. The water flow output by the pump truck is utilized to convey the instrument to the bottom of the horizontal section, so that the problem that the cable can wind the oil pipe or the sucker rod in the conveying mode of the oil pipe or the sucker rod is avoided, the insulation damage of the cable or the extrusion breakage of the cable is avoided, the accident that the instrument falls into the well is avoided, and the device has the characteristics of short conveying time, small construction risk and the like.
Description
Technical Field
The invention relates to the technical field of horizontal well testing, in particular to a pumping method and a pipe column of a horizontal well tester.
Background
In the horizontal well test of the oil field production well, an instrument needs to be conveyed to the bottom of the horizontal section. The traditional conveying method conveys the instrument to the bottom of the horizontal section in an oil pipe or sucker rod mode, the two modes have long construction time, and the test cost is increased due to the fact that the instrument occupies a well head for a long time; in the transportation process, oil pipe or sucker rod are uncontrollably rotated in the well, the cable can wind the oil pipe or sucker rod, the insulation of the cable is damaged or the cable is extruded and broken, the test cannot be completed, even the accident of instrument falling into the well occurs, and the construction risk is large.
Disclosure of Invention
Therefore, the invention provides a pumping method and a pipe column of a horizontal well tester, which aim to solve the technical problems.
In order to achieve the above purpose, the invention provides the following technical scheme:
in a first aspect of the invention, a pumping method of a horizontal well tester comprises the following steps:
the pipe column with the sieve pipe at the front end is put into the well bottom;
setting an instrument in the pipe column;
the pump truck injects water into the pipe column, and the instrument is pumped to the bottom of the well by using the water pressure.
Further, the method for lowering the pipe column with the sieve pipe at the front end into the well bottom specifically comprises the following steps: and sequentially connecting the pipe plug, the sieve tube, the two oil pipes, the short section and the plurality of oil pipes and entering the well until the pipe plug reaches the bottom of the horizontal section.
Further, before running the pipe string with the screen at the front end into the well bottom, 27/8 "heavy chamfer tubing, a 27/8" screen, a 27/8 "plug and a 27/8" nipple were prepared. Wherein 27/8' is a standard model and is a common language in the petroleum field.
And further, before connecting the oil pipe, detecting the oil pipe by using a phi 50mm through pipe gauge.
And further, after the pipe column is lowered into the well bottom and before the instrument is lowered into the pipe column, installing a three-way valve on the pipe column at the well mouth, connecting a pump truck with the three-way valve, and injecting water into the pipe column at the well mouth by the pump truck to ensure that the liquid in the well is normally circulated smoothly.
Furthermore, after the three-way valve is installed, a top pulley, a ground pulley and a tension meter are installed at a wellhead, the cable joint sequentially penetrates through the ground pulley, the top pulley and the blowout preventer and then is connected with the instrument, the instrument is placed into the pipe column, and then the blowout preventer is installed at a top valve port of the three-way valve.
Further, after the instrument is pumped downhole, the pressure is stopped.
In a second aspect of the invention, the pumping pipe column of the horizontal well tester comprises a plug, a sieve pipe, two oil pipes, a short section, a plurality of oil pipes, a three-way valve and a blowout preventer which are sequentially connected from bottom to top, wherein the blowout preventer comprises a body and a pressing cap, the body is provided with a cavity penetrating through the body from top to bottom, a plurality of overlapped separation blades are arranged in the cavity, through holes for cables to penetrate through are formed in the middle of the separation blades, the pressing cap is fixed to the top of the body, through holes for the cables to penetrate through are formed in the top of the pressing cap, overflow holes are formed in the side part, close to the pressing cap, of the body, and side valve ports of the three-.
Further, the body comprises a first blowout prevention pipe, a second blowout prevention pipe and a blowout prevention overflow pipe which are sequentially connected from bottom to top, the pressure cap is fixed to the top of the blowout prevention overflow pipe, and the overflow port is formed in the side portion of the blowout prevention overflow pipe.
Furthermore, the separation blade is equipped with the bevel connection, the bevel connection is followed the edge of separation blade extends to the through-hole of separation blade, the plane of bevel connection with the upper and lower side of separation blade is the non-vertical state.
The invention has the following advantages:
the water flow output by the pump truck is utilized to convey the instrument to the bottom of the horizontal section, so that the problem that the cable can wind the oil pipe or the sucker rod in the conveying mode of the oil pipe or the sucker rod is avoided, the insulation damage of the cable or the extrusion breakage of the cable is avoided, the accident that the instrument falls into the well is avoided, and the device has the characteristics of short conveying time, small construction risk and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so that those skilled in the art can understand and read the present invention, and do not limit the conditions for implementing the present invention, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the functions and purposes of the present invention, should still fall within the scope covered by the contents disclosed in the present invention.
Fig. 1 is a flow chart of a pumping method of a horizontal well tester according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of a pumping string of the horizontal well tester provided in the embodiment of the present invention.
Fig. 3 is a schematic diagram of a blowout preventer of a horizontal well tester pumping string according to an embodiment of the present invention.
Fig. 4 is a schematic diagram of a barrier of a blowout preventer of a pumping string of a horizontal well tester according to an embodiment of the present invention.
In the figure: 1-plug, 2-screen pipe, 3-oil pipe, 4-short section, 5-three-way valve, 6-blowout preventer, 61-first blowout preventer, 62-second blowout preventer, 63-blowout preventer overflow pipe, 631-overflow port, 64-pressure cap, 65-baffle, 651-bevel port, 7-instrument, 8-cable, 9-pump truck.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the present specification, the terms "upper", "lower", "left", "right", "middle", and the like are used for clarity of description, and are not intended to limit the scope of the present invention, and changes or modifications in the relative relationship may be made without substantial changes in the technical content.
As shown in fig. 1 and 2, a pumping method of a horizontal well tester comprises the following steps:
and step S1, spare parts. Firstly, preparing an 27/8 'plug 1, a 27/8' screen pipe 2, a plurality of 27/8 'thickened chamfer oil pipes 3, a 27/8' short joint 4, a three-way valve 5, a crossover sub, a blowout preventer 6, a top pulley, a ground pulley, a tension meter, a logging instrument 7, a cable 8, a pump truck 9 and the like.
Step S2, the pipe string with the screen 2 at the front end is lowered to the bottom of the well. Specifically, the pipe plug 1, the sieve tube 2, the two oil pipes 3, the short section 4 and the plurality of oil pipes 3 are sequentially connected and enter the well in sequence until the pipe plug 1 reaches the bottom of the horizontal section. Before connecting the oil pipes 3, a phi 50mm through pipe gauge is used for detecting each oil pipe 3, so that the instrument 7 can pass through the oil pipes 3.
In step S3, a three-way valve is installed. The three-way valve is installed at the pipe orifice of the oil pipe 3 at the uppermost end, so that the bottom valve port of the three-way valve is communicated with the oil pipe 3. The three-way valve of the invention is a valve with more than three valve port channels, generally a four-way valve on site, and can connect the existing four-way valve with an oil pipe 3, wherein the bottom valve port is communicated with the oil pipe 3, and only one valve port on the side part is blocked, and the valve ports on the side part and the top part are used for other purposes, wherein, the top valve port is provided with a conversion joint to form a 21/2' oil pipe 3 female buckle. 21/2' is a general term for marking specification and model in the petroleum field.
Step S4, drifting is being cycled. The liquid outlet pipeline of the pump truck 9 is connected with a side valve port of the three-way valve, clear water (or slurry can be used) is pumped in, liquid flows to the bottom of the well from the well head in the pipe column, then flows to the annular space from the pores of the sieve pipe 2, finally returns to the well head from the annular space and enters the slurry pool, positive circulation is formed in the well, and the circulation in the well is smooth.
In step S5, the instrument 7 is run into the column. And installing a top pulley, a ground pulley and a tension meter and connecting. And installing a top pulley, a ground pulley and a tension meter at a wellhead, wherein the installation of the top pulley and the ground pulley and the tension meter is a process in the existing well logging and is not described herein again. The cable joint (also called as bridle) passes through the ground pulley, the top pulley and the blowout preventer 6 in sequence and then is connected with the instrument 7, and the power supply inspection instrument 7 is used for the second inspection before entering the well and generally carries out the first inspection when spare parts are prepared. The tool 7 is normally placed in the string, after which the blowout preventer 6 is installed at the top port of the three-way valve.
And step S6, the pump truck 9 injects water into the pipe column, and the instrument 7 is pumped to the bottom of the well by using water pressure. The working team cooperates to press the pushing instrument 7 at the wellhead.
Step S7, power supply measurement. After the instrument 7 is pumped to the bottom of the well, the pressurizing is stopped, the instrument 7 is powered, the cable 8 is lifted up to measure at a normal speed, and tension change is noticed in the measuring process.
And step S8, dismantling. After the test is finished and the self-checking test data is qualified, the blowout preventer 6 is opened when the instrument 7 is lifted to a position 50m away from the wellhead, the instrument 7 is lifted out, the instrument 7 is maintained and boxed, and the sky pulley, the ground pulley and the tensiometer are detached.
Utilize the rivers of pump truck 9 output, carry the horizontal segment bottom with instrument 7 water conservancy, avoid among oil pipe 3 or the sucker rod transport mode cable 8 can twine the problem of oil pipe 3 or sucker rod to avoid the insulating of cable 8 impaired or cable 8 to be crowded disconnected, avoid taking place the accident that instrument 7 fell the well, still have characteristics such as transport time weak point, construction risk are little.
As shown in fig. 2 to 4, a horizontal well tester pumping string is used in cooperation with a horizontal well tester pumping method. The pumping pipe column comprises a plug 1, a sieve pipe 2, two oil pipes 3, a short section 4, a plurality of oil pipes 3, a three-way valve and a blowout preventer 6 which are sequentially connected from bottom to top. The blowout preventer 6 comprises a body and a pressing cap 64, wherein the body is provided with a cavity penetrating up and down, a plurality of overlapped separation blades 65 are arranged in the cavity, through holes for the cables 8 to pass through are formed in the middle of the separation blades 65, the pressing cap 64 is fixed to the top of the body, the top of the pressing cap 64 is provided with through holes for the cables 8 to pass through, and the side part, close to the pressing cap 64, of the body is provided with overflow holes. The body comprises a first blowout prevention pipe 61, a second blowout prevention pipe 62 and a blowout prevention overflow pipe 63 which are sequentially connected from bottom to top, a pressure cap 64 is fixed at the top of the blowout prevention overflow pipe 63, and an overflow port 631 is formed in the side of the blowout prevention overflow pipe 63. The blocking piece 65 is provided with an inclined opening 651, the inclined opening 651 extends from the edge of the blocking piece 65 to the through hole of the blocking piece 65, and the plane of the inclined opening 651 is not perpendicular to the upper side surface and the lower side surface of the blocking piece 65. The three-way valve of the present invention is a valve with more than three valve port channels, generally a four-way valve on site, and can connect the existing four-way valve with an oil pipe 3, wherein the bottom valve port is communicated with the oil pipe 3, and only one valve port on the side part is blocked.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (10)
1. A pumping method of a horizontal well tester is characterized by comprising the following steps:
the pipe column with the sieve pipe at the front end is put into the well bottom;
setting an instrument in the pipe column;
the pump truck injects water into the pipe column, and the instrument is pumped to the bottom of the well by using the water pressure.
2. The pumping method of the horizontal well tester according to claim 1, wherein the step of running the tubular column with the screen pipe at the front end into the bottom of the well specifically comprises the following steps: and sequentially connecting the pipe plug, the sieve tube, the two oil pipes, the short section and the plurality of oil pipes and entering the well until the pipe plug reaches the bottom of the horizontal section.
3. The pumping method of the horizontal well tester according to claim 2, wherein a plurality of oil pipes, a screen pipe, a plug and a sub are prepared before a pipe string with a screen pipe at the front end is run into the bottom of the well.
4. The pumping method of the horizontal well tester according to claim 2, wherein before connecting the oil pipe, the oil pipe is inspected by a phi 50mm through gauge.
5. The pumping method of the horizontal well tester as recited in claim 2, wherein after the tubing string is run into the bottom of the well and before the tester is run into the tubing string, a three-way valve is installed on the tubing string at the wellhead, and the pump truck is connected with the three-way valve and injects water into the tubing string at the wellhead to ensure that the liquid in the well is circulated smoothly.
6. The pumping method of the horizontal well tester as claimed in claim 5, wherein after the three-way valve is installed, the top and bottom pulleys and the tensiometer are installed at the wellhead, the cable joint sequentially passes through the bottom pulley, the top pulley and the blowout preventer and then is connected with the instrument, the instrument is placed in the pipe column, and then the blowout preventer is installed at the top valve port of the three-way valve.
7. The horizontal well tester pumping method of claim 1, wherein the pumping is stopped after the instrument is pumped downhole.
8. The utility model provides a horizontal well tester pumping string, its characterized in that includes plug, a screen pipe, two oil pipes, a nipple joint, many oil pipes, three-way valve and the preventer of connecting gradually from bottom to top, the preventer includes the body and presses the cap, the body is equipped with the cavity about lining up, be equipped with the separation blade of a plurality of superpositions in the cavity, the separation blade middle part is equipped with the through-hole that supplies the cable to pass, it is fixed in to press the cap the top of body, the top of pressing the cap is equipped with the through-hole that supplies the cable to pass, being close to of body the lateral part of pressing the cap is equipped with the overflow hole, the lateral part valve port of three-way valve.
9. The pumping string of the horizontal well tester of claim 8, wherein the body comprises a first blowout prevention pipe, a second blowout prevention pipe and a blowout prevention overflow pipe which are sequentially connected from bottom to top, the pressure cap is fixed to the top of the blowout prevention overflow pipe, and the overflow port is formed in the side of the blowout prevention overflow pipe.
10. The pumping string of the horizontal well tester of claim 8, wherein the blocking piece is provided with an inclined opening, the inclined opening extends from the edge of the blocking piece to the through hole of the blocking piece, and the plane of the inclined opening is not perpendicular to the upper side surface and the lower side surface of the blocking piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110639509.0A CN113338905A (en) | 2021-06-08 | 2021-06-08 | Pumping method and tubular column of horizontal well tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110639509.0A CN113338905A (en) | 2021-06-08 | 2021-06-08 | Pumping method and tubular column of horizontal well tester |
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| Publication Number | Publication Date |
|---|---|
| CN113338905A true CN113338905A (en) | 2021-09-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110639509.0A Pending CN113338905A (en) | 2021-06-08 | 2021-06-08 | Pumping method and tubular column of horizontal well tester |
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2021
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Application publication date: 20210903 |