CN114607343A - Acid fracturing integrated pipe column and acid fracturing method - Google Patents
Acid fracturing integrated pipe column and acid fracturing method Download PDFInfo
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- CN114607343A CN114607343A CN202011407518.9A CN202011407518A CN114607343A CN 114607343 A CN114607343 A CN 114607343A CN 202011407518 A CN202011407518 A CN 202011407518A CN 114607343 A CN114607343 A CN 114607343A
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- 239000002253 acid Substances 0.000 title claims abstract description 208
- 238000000034 method Methods 0.000 title claims abstract description 49
- 239000012530 fluid Substances 0.000 claims abstract description 24
- 230000009471 action Effects 0.000 claims abstract description 17
- 238000007599 discharging Methods 0.000 claims abstract description 14
- 238000003825 pressing Methods 0.000 claims abstract description 9
- 239000007788 liquid Substances 0.000 claims description 36
- 238000012360 testing method Methods 0.000 claims description 33
- 230000010354 integration Effects 0.000 claims description 30
- 210000002445 nipple Anatomy 0.000 claims description 13
- 238000002347 injection Methods 0.000 claims description 8
- 239000007924 injection Substances 0.000 claims description 8
- 230000008602 contraction Effects 0.000 claims description 6
- 239000013589 supplement Substances 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 5
- 230000000903 blocking effect Effects 0.000 claims description 4
- 239000003129 oil well Substances 0.000 abstract description 16
- 230000009466 transformation Effects 0.000 abstract description 9
- 230000015572 biosynthetic process Effects 0.000 description 13
- 230000008569 process Effects 0.000 description 13
- 238000010276 construction Methods 0.000 description 7
- 239000007789 gas Substances 0.000 description 7
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000009530 blood pressure measurement Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 238000007790 scraping Methods 0.000 description 2
- 238000010306 acid treatment Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
- E21B43/14—Obtaining from a multiple-zone well
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
- E21B49/08—Obtaining fluid samples or testing fluids, in boreholes or wells
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- Life Sciences & Earth Sciences (AREA)
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- Geology (AREA)
- Mining & Mineral Resources (AREA)
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- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geophysics (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
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Abstract
The application discloses an acid fracturing integrated pipe column and an acid fracturing method, and belongs to the technical field of oil and gas exploitation. The method comprises the steps of setting an RTTS packer, injecting acid liquor into an oil pipe, discharging kill fluid from an annular space between the oil pipe and a sleeve, closing an OMNI valve, applying pressure to the oil pipe, enabling the acid liquor in the oil pipe to enter a gap of a stratum, setting a Y241 packer, applying pressure to the oil pipe, enabling the acid liquor in the oil pipe to be under the action of the pressure, discharging the acid liquor in the oil pipe into the annular space below the Y241 packer from the oil pipe, enabling the acid liquor in the oil pipe to enter the gap of the stratum from the annular space below the Y241 packer, opening a fracturing sliding sleeve, applying pressure to the oil pipe, enabling the acid liquor in the oil pipe to be under the action of the pressure, discharging the acid liquor in the annular space below the Y241 packer from the oil pipe, and enabling the acid-pressure integrated pipe column to perform acidizing treatment on the stratum in a layered mode, improving efficiency of the stratum of an oil well, improving comprehensiveness of acidizing on the stratum, and expanding a transformation range of the stratum.
Description
Technical Field
The application relates to the technical field of oil and gas exploitation, in particular to an acid fracturing integrated tubular column and an acid fracturing method.
Background
Before the oil or the natural gas is produced, because the stratum for storing the oil or the natural gas comprises gaps, the stratum needs to be acidized, so that the gaps of the acidized stratum are enlarged, and the yield of the stratum is improved. An APR (Annular Pressure response) tool capable of acidizing and testing a well, the APR tool comprising: the hydraulic pressure control system comprises a packer, an RD circulating valve (a type of circulating valve), an RD safety circulating valve (a type of circulating valve), a jar knocker, a pressure gauge support cylinder, a hydraulic circulating valve, a safety joint, an expansion joint and the like. However, the APR tool is inefficient in acidizing the formation and has a small scope for acidizing the formation.
Disclosure of Invention
The embodiment of the application provides an acid fracturing integrated pipe column and an acid fracturing method, the acid fracturing integrated pipe column is suitable for acidizing a stratum with large thickness, the stratum is acidized in a layering mode, the efficiency of the stratum of an oil well is improved, the comprehensiveness of acidizing the stratum is improved, and the transformation range of the stratum is expanded. The technical scheme provided by the embodiment of the application is as follows:
in one aspect, an embodiment of the present application provides an integrated tubular column is pressed to acid, the integrated tubular column of the acid includes:
a test tool, an OMNI valve (a type of valve), an RTTS packer, a fracturing sleeve, a Y241 packer (a type of packer), and a tubing, the test tool, the OMNI valve, the RTTS packer (a type of packer), the fracturing sleeve, and the Y241 packer being sleeved outside the tubing, the test tool comprising an RDS circulation valve and a pressure gauge bowl;
in the environment of well killing fluid, the acid fracturing integrated pipe column is put into the casing;
setting the RTTS packer, sealing off an annular space which is positioned between the oil pipe and the casing and is positioned below the RTTS packer, opening the OMNI valve, communicating the oil pipe with the annular space, injecting acid liquor into the oil pipe, and discharging the well killing fluid from the annular space between the oil pipe and the casing;
the injection amount of the acid liquor reaches a preset liquid amount, the OMNI valve is closed, the oil pipe and the annular space are sealed, pressure is applied to the oil pipe, the acid liquor in the oil pipe is subjected to the action of the pressure, is discharged from the oil pipe into the annular space below the RTTS packer, fractures the stratum from the annular space and enters gaps of the stratum;
setting the Y241 packer to seal off an annular space between the tubing and the casing below the Y241 packer;
injecting acid liquid into the oil pipe, applying pressure to the oil pipe, and discharging the acid liquid in the oil pipe into the annular space below the Y241 packer and into gaps of the stratum from the annular space under the action of the pressure;
the fracturing sliding sleeve is opened, acid liquor is injected into the oil pipe, pressure is applied to the oil pipe, and the acid liquor in the oil pipe is discharged into the annular space below the Y241 packer from the oil pipe under the action of the pressure and enters gaps of the stratum from the annular space;
opening the RDS circulating valve, communicating the oil pipe with the annular space, plugging the oil pipe positioned below the RDS circulating valve, and collecting a liquid sample in the stratum;
the pressure gauge supporting cylinder is used for measuring the pressure in the oil pipe and the pressure in the sleeve and uploading the measured pressure to the control equipment.
In a possible implementation manner, the acid fracturing integrated tubular column further comprises a positioning nipple, and the positioning nipple is sleeved outside the oil pipe;
the positioning short section is used for measuring the current depth of the positioning short section.
In another possible implementation manner, the acid fracturing integrated tubular column further comprises a hydraulic bypass valve, and the hydraulic bypass valve is sleeved outside the oil pipe; the hydraulic bypass valve is used for bypassing the upper part of the RTTS packer;
the hydraulic bypass valve is used for releasing pressure at the lower layer of the RTTS packer.
In another possible implementation manner, the acid fracturing integrated pipe column comprises a first expansion joint and a second expansion joint; the first telescopic joint and the second telescopic joint are sleeved outside the oil pipe;
when the acid fracturing integrated pipe column is expanded under heat, the first expansion joint and the second expansion joint extend to supplement the stretching caused by expansion, and when the acid fracturing integrated pipe column is contracted under cold, the first expansion joint and the second expansion joint shorten to supplement the contraction caused by contraction.
In another possible implementation manner, the acid fracturing integrated tubular column further comprises an RD circulation valve, and the RD circulation valve is sleeved outside the oil pipe;
under the condition that the RDS circulating valve cannot be opened, opening the RD circulating valve, communicating the oil pipe with the annular space, and blocking the oil pipe below the RD circulating valve;
alternatively, the RDS circulation valve is maintained closed with the RDS circulation valve open.
In another possible implementation manner, the acid fracturing integrated tubular column further comprises a jar, and the jar is sleeved outside the oil pipe;
and the jar is used for shocking to lift out the acid fracturing integrated pipe column.
In another possible implementation manner, the acid fracturing integrated pipe column further comprises a hydraulic anchor; the hydraulic anchor is positioned above the RTTS packer;
the hydraulic anchor is used for fixing the RTTS packer.
In another possible implementation, the maximum pressure that the Y241 packer can withstand is less than 80 megapascals.
In another possible implementation, the frac integrated string further comprises a ball seat located at a lower end of the Y241 packer;
and the valve ball is thrown into the oil pipe, and the oil pipe is blocked when the ball seat is contacted with the valve ball.
In another aspect, an embodiment of the present application provides an acid fracturing method, where the method is applied to an acid fracturing integrated column, where the acid fracturing integrated column includes: the testing tool, the OMNI valve, the RTTS packer, the fracturing sliding sleeve, the Y241 packer and the oil pipe are sleeved outside the oil pipe; the method comprises the following steps:
in the environment of well killing fluid, the acid fracturing integrated pipe column is put into the casing;
setting the RTTS packer, sealing off an annular space which is positioned between the oil pipe and the casing and is positioned below the RTTS packer, opening the OMNI valve, communicating the oil pipe with the annular space, injecting acid liquor into the oil pipe, and discharging the well killing fluid from the annular space between the oil pipe and the casing;
the injection amount of the acid liquor reaches a preset liquid amount, the acid liquor is determined to reach a preset position, pressure is applied to the oil pipe, the acid liquor in the oil pipe is under the action of the pressure, is discharged into the annular space below the RTTS packer from the oil pipe, fractures the stratum from the annular space and enters gaps of the stratum;
the OMNI valve is closed, the oil pipe and the annular space are sealed, the Y241 packer is set, and the annular space between the oil pipe and the casing and below the Y241 packer is sealed;
injecting acid liquid into the oil pipe, applying pressure to the oil pipe, and discharging the acid liquid in the oil pipe into the annular space below the Y241 packer and into gaps of the stratum from the annular space under the action of the pressure;
the fracturing sliding sleeve is opened, acid liquor is injected into the oil pipe, pressure is applied to the oil pipe, and the acid liquor in the oil pipe is discharged into the annular space below the Y241 packer from the oil pipe under the action of the pressure and enters gaps of the stratum from the annular space;
opening the RDS circulating valve, communicating the oil pipe with the annular space, plugging the oil pipe positioned below the RDS circulating valve, and collecting a liquid sample in the stratum;
the pressure gauge supporting cylinder measures the pressure in the oil pipe and the pressure in the sleeve pipe, and the measured pressure is uploaded to the control equipment.
In a possible implementation manner, the acid fracturing integrated tubular column further comprises a positioning nipple, and the positioning nipple is sleeved outside the oil pipe; the method further comprises the following steps:
and the positioning short section measures the current depth of the positioning short section.
In another possible implementation manner, the acid fracturing integrated tubular column further comprises a hydraulic bypass valve, the hydraulic bypass valve is sleeved outside the oil pipe, and the hydraulic bypass valve is used for bypassing the upper part of the RTTS packer; the method further comprises the following steps:
and releasing the pressure at the lower layer of the RTTS packer through the hydraulic bypass valve.
In another possible implementation manner, the acid fracturing integrated tubular column further comprises an RD circulation valve, and the RD circulation valve is sleeved outside the oil pipe; the method further comprises the following steps:
under the condition that the RDS circulating valve cannot be opened, opening the RD circulating valve, communicating the oil pipe with the annular space, and blocking the oil pipe below the RD circulating valve;
alternatively, the RDS circulation valve is maintained closed with the RDS circulation valve open.
In another possible implementation manner, the acid fracturing integrated tubular column further comprises a jar, and the jar is sleeved outside the oil pipe; the method further comprises the following steps:
and the jar jars to lift out the acid fracturing integrated pipe column.
The beneficial effects brought by the technical scheme provided by the embodiment of the application at least comprise:
the utility model provides an acid fracturing integration tubular column, can seal the annular space between oil pipe and the sleeve pipe through RTTS packer and Y241 packer, it separates to be located the annular space of RTTS packer below through Y241 packer, inject the acidizing fluid into the stratum through separated annular space, the transformation to the stratum is accomplished to the layering, and can gather the liquid sample and oil pipe and sheathed tube pressure in the stratum through the testing tool, and then accomplish the test of stratum, this acid fracturing integration tubular column is applicable to the acidizing of the stratum that thickness is big, the layering carries out acidizing to the stratum, the efficiency of the stratum to the oil well has been improved, the comprehensiveness of acidizing is carried out to the stratum has been improved, the transformation scope to the stratum has been expanded.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an acid fracturing integrated column provided by an embodiment of the present application;
fig. 2 is a flowchart of an acid fracturing method according to an embodiment of the present disclosure.
Detailed Description
To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
The acid fracturing integrated tubular column provided by the embodiment of the application, use in the oil and gas exploitation field, the back is accomplished in the well drilling, because there is the gap in the stratum, get into the oil well through the gap in order to improve oil gas, need carry out acid fracturing to the gap in the stratum earlier, so that the gap enlarges, increase output, adopt the acid fracturing integrated tubular column that the embodiment of the application provided, not only accomplish the acid fracturing to the stratum of a plurality of intervals, can also gather liquid sample and pressure in the stratum, test the stratum, this acid fracturing integrated tubular column has improved the efficiency to the stratum of oil well, and can carry out acid fracturing to a plurality of stratums, the transformation scope to the stratum has been expanded.
Fig. 1 is a schematic structural diagram of an acid fracturing integrated column provided in an embodiment of the present application. Referring to fig. 1, the acid fracturing integrated column comprises: the test tool comprises an RDS circulating valve 5 and a pressure gauge support cylinder 6.
Wherein, the test tool, the OMNI valve 1, the RTTS packer 2, the fracturing sliding sleeve 3 and the Y241 packer 4 are sleeved outside the oil pipe.
In the embodiment of the application, the testing tool is used for testing the stratum, the RTTS packer 2 and the Y241 packer 4 are used for packing the stratum, the OMNI valve 1 is used for communicating the oil pipe with the annular space, the fracturing sliding sleeve 3 is used for communicating the oil pipe with the annular space in the fracturing situation, and the oil pipe is used for injecting acid liquor into the stratum.
Before the method and the device for drilling the oil-gas well, the well is drilled firstly, then the casing pipe is put into the drilled well, the well is fixed through the casing pipe, other pipe columns are put into the casing pipe subsequently, the well is adjusted through the other pipe columns, and oil-gas exploitation is completed.
Before the acid fracturing integrated pipe column is put into the casing, the acid fracturing integrated pipe column is firstly installed outside the oil pipe according to the installation sequence of an RDS circulating valve 5, a pressure gauge support cylinder 6, an OMNI valve 1, an RTTS packer 2, a fracturing sliding sleeve 3 and a Y241 packer 4 which are included in a testing tool, the acid fracturing integrated pipe column is formed after the installation is finished, and the acid fracturing integrated pipe column is put into the casing under the environment of well killing fluid.
Optionally, the test tool, the OMNI valve 1, the RTTS packer 2, the fracturing slips 3, and the Y241 packer 4 are all threaded into the tubing such that the test tool and the Y241 packer 4 are sleeved outside the tubing.
Optionally, the acid fracturing integrated tubular column further comprises a positioning nipple 7, and the positioning nipple 7 is sleeved outside the oil pipe. For example, the locating sub 7 is located above the test tool, or the locating sub 7 is located between the test tool and the Y241 packer 4.
Wherein, this location nipple 7 is used for measuring this location nipple 7 present degree of depth of locating. In the process of running into the acid fracturing integrated tubular column, because the positioning short section 7 is positioned on the acid fracturing integrated tubular column, after the depth is measured through the positioning short section 7, whether the acid fracturing integrated tubular column runs into the preset position or not is judged according to the depth, and the running operation of the acid fracturing integrated tubular column is stopped after the acid fracturing integrated tubular column runs into the preset position.
This application embodiment measures the current degree of depth of locating nipple joint 7 through locating nipple joint 7 that sets up, and then goes into preset position department under the acid fracturing integration tubular column based on the degree of depth, has improved the accuracy of going into the acid fracturing integration tubular column down.
It should be noted that before the integrated pipe column is subjected to acid fracturing, a perforating pipe column is required to perforate the casing in a well killing fluid environment, so that the oil well is communicated with the stratum through a through hole, and then the casing is subjected to well dredging and scraping, so that foreign objects in the casing are cleaned, and the cleanness of the inside of the casing is ensured.
After the acid fracturing integrated pipe column is put into the casing, an annular space is formed between the oil pipe and the casing, the oil pipe also comprises an oil pipe space, and the annular space is communicated with the oil pipe space at the moment. Because the acid fracturing integrated pipe column is lowered into the casing under the environment of the well killing fluid, the well killing fluid exists in the oil pipe and the annular space, and the well killing fluid in the oil pipe can be replaced out in the mode of injecting the acid liquor.
In the displacement process, the RTTS packer 2 is set, the annular space style which is positioned between an oil pipe and a sleeve and is positioned below the RTTS packer 2 is opened, the OMNI valve 1 is communicated with the annular space, acid liquor is injected into the oil pipe, the pressure in the oil pipe is gradually increased in the acid liquor injection process, the pressure in the annular space is unchanged, the well killing fluid in the annular space is pushed by the acid liquor in the oil pipe under the condition that the pressure in the oil pipe is greater than the pressure in the annular space, so that the well killing fluid is discharged from the annular space, when the injection amount of the acid liquor reaches a preset liquid amount, the injection of the acid liquor is stopped, the oil pipe is filled with the acid liquor, the OMNI valve 1 is closed, the oil pipe and the annular space are sealed, the pressure is applied to the oil pipe, after the acid liquor in the oil pipe is subjected to the pressure, the pressure in the oil pipe is increased, and under the condition that the acid liquor in the oil pipe is subjected to the increased pressure, is discharged from the tubing into the annulus below the RTTS packer 2, fracturing the formation from the annulus and into the crevices of the formation.
Optionally, the frac integrated string further comprises a hydraulic anchor 1313, the hydraulic anchor 1313 being located above the RTTS packer 2. Wherein, this water conservancy anchor 1313 can be fixed RTTS packer 2, prevents that RTTS packer 2 from gliding at the setting in-process, leads to packing the annular space failure.
The Y241 packer 4 is located in the annular space and subsequent Y241 packers 4 are set to seal off the annular space so that the annular space below the Y241 packer 4 is in a sealed condition.
Optionally, the acid fracturing integrated tubular column comprises a ball seat, the ball seat is located at the lower end of a Y241 packer 4, in the setting process of the Y241 packer 4, a valve ball is thrown into an oil pipe, the valve ball sinks to the position of the ball seat at the moment, when the ball seat is in contact with the valve ball, the oil pipe is plugged, pressure is applied to the oil pipe at the moment, the Y241 packer 4 receives the effect of the pressure, the setting process is started, until the Y241 packer 4 is set, the annular space between the oil pipe and a sleeve is sealed, the applied pressure is increased continuously, the ball seat is knocked down, and the valve ball and the ball seat fall into the bottom of a well.
Wherein the maximum pressure that the Y241 packer 4 can withstand is less than 80 MPa. Y241 packer 4 simple structure in this application embodiment, the pressure that can bear is big to make this acid fracturing integration tubular column use in deep oil gas well, prevent to lead to pressure too big because the degree of depth is too big, can't seal annular space and produce harm, improved the acid fracturing success rate.
In this application embodiment, after the Y241 packer 4 is set, a process of squeezing acid into a gap of a formation needs to be performed, an annular space located below the Y241 is communicated with the outside only through an oil pipe, at this time, acid is injected into the oil pipe, pressure is applied to the oil pipe, the acid in the oil pipe is under the action of pressure, the acid is discharged into the annular space from the oil pipe, the acid contacts the formation, when the pressure is large enough, the formation is fractured, the acid can enter the gap of the formation from the annular space, and then the acid is enabled to react with the gap of the formation, and the gap of the formation is enlarged.
Optionally, in the process of squeezing the acid liquid into the gaps of the stratum, the acid liquid in the oil pipe is firstly discharged into the stratum according to a smaller discharge capacity, after the fixed amount of acid liquid is squeezed into the oil liquid, the stratum is fractured by increased pressure, at the moment, the acid liquid can be normally sucked into the gaps of the stratum, then the discharge capacity is increased, and the acid liquid in the oil pipe is completely discharged into the gaps of the stratum.
The displacement of the acid liquid squeezed into the gaps of the stratum is controlled by controlling the pressure applied to the interior of the oil pipe, and the larger the pressure applied to the interior of the oil pipe is, the larger the displacement of the acid liquid squeezed into the gaps of the stratum is.
In this application embodiment, still need carry out acidizing to the stratum that is located between RTTS packer 2 and Y241 packer 4, open fracturing sliding sleeve 3, through fracturing sliding sleeve 3 with be located the annular space between RTTS packer 2 and the Y241 packer 4 and oil pipe intercommunication, inject acidizing fluid in the oil pipe this moment, exert pressure to oil pipe, acidizing fluid in the oil pipe receives the effect of pressure, discharges into the annular space that is located Y241 packer 4 below from oil pipe, enters into the gap in stratum from the annular space.
After the acid liquor in the oil pipe is squeezed into the gap in the stratum, oil and gas exploitation can be carried out at the moment. In addition, the pressure in the oil pipe and the pressure in the sleeve can be measured through the pressure gauge support cylinder 6, the measured pressure in the oil pipe and the pressure in the sleeve in the mining process can be uploaded to the control equipment, and the control equipment can be used for controlling the pressure in the oil pipe and the sleeve.
After the mining and the pressure measurement are finished, the RDS circulating valve 5 is opened, the oil pipe is communicated with the annular space, the oil pipe located below the RDS circulating valve 5 is blocked, at the moment, the RDS circulating valve 5 can collect a liquid sample in the stratum, and the collected liquid sample in the stratum is obtained after the acid-fracturing integrated pipe column is started.
In the embodiment of the application, formation parameters such as yield, pressure, liquid property, permeability and the like of the oil well can be determined through production and pressure measurement, and then the formation is continuously produced according to the formation parameters obtained through measurement.
Optionally, the RTTS packer is located Y241 packer top, the annular space that will be located this RTTS packer below is sealed through the RTTS packer earlier, again seal Y241 packer seat, then can be separated for two parts with the annular space that is located this RTTS packer below, carry out acidizing respectively to the stratum that is located between RTTS packer and the Y241 packer and the stratum that is located Y241 packer below, reform transform the stratum in layers, guarantee under the thick condition in stratum, the layering reforms transform the stratum, guarantee to reform transform the accuracy in stratum, improve the scope of reforming transform the stratum.
In addition, the inner diameter of a casing above the RTTS packer in the stratum is larger than the inner diameter of the casing below the RTTS packer, and the size of the RTTS packer is larger than that of the T241 packer, so that the RTTS packer can seal the annular space between the oil pipe and the casing in the setting process.
The acid fracturing integration tubular column of this application embodiment adopts RTTS packer and Y241 packer to set, is applicable to the deep-seated and big oil well of thickness, and this RTTS packer and Y241 packer can be big at the degree of depth, and realizes setting under the thick condition of reservoir, and then guarantees to carry out the acidizing to the gap of stratum, has expanded the range of application of acid fracturing integration tubular column.
The utility model provides an acid fracturing integration tubular column, can seal the annular space between oil pipe and the sleeve pipe through RTTS packer and Y241 packer, can separate the annular space that is located RTTS packer below through Y241 packer, inject the acidizing fluid into the stratum through separated annular space, the transformation to the stratum is accomplished to the layering, and can gather liquid sample and oil pipe and sheathed tube pressure in the stratum through the testing tool, and then accomplish the test of stratum, this acid fracturing integration tubular column is applicable to the acidizing of the stratum that thickness is big, the layering carries out acidizing to the stratum, the efficiency of the stratum to the oil well has been improved, the comprehensiveness of acidizing is carried out to the stratum has been improved, the transformation scope to the stratum has been expanded.
Optionally, the acid fracturing integrated tubular column provided by the embodiment of the application further comprises a first telescopic joint 9 and a second telescopic joint 10, and the first telescopic joint 9 and the second telescopic joint 10 are sleeved outside the oil pipe. For example, the first telescoping section 9 is located above the Y241 packer 4 and the second telescoping section 10 is located above the RTTS packer 2, or the first telescoping section 9 is located above the test tool and the second telescoping section 10 is located below the RTTS packer 2, or the first telescoping section 9 and the second telescoping section 10 are located elsewhere.
When the acid-fracturing integrated pipe column is expanded by heat, the first telescopic joint 9 and the second telescopic joint 10 are extended to supplement the stretching caused by expansion, and when the acid-fracturing integrated pipe column is contracted by cold, the first telescopic joint 9 and the second telescopic joint 10 are shortened to supplement the contraction caused by contraction.
For example, in the process of running the acid fracturing integrated column, since the temperature of the environment in which the acid fracturing integrated column is located continuously increases as the depth of the acid fracturing integrated column is continuously increased, the acid fracturing integrated column expands due to the increase of the temperature of the environment in which the acid fracturing integrated column is currently located, and the first expansion joint 9 and the second expansion joint 10 can extend to replace the stretching due to the expansion.
In the process of pulling out the acid fracturing integrated pipe column, the temperature of the environment where the acid fracturing integrated pipe column is located is continuously reduced along with the fact that the depth of the acid fracturing integrated pipe column is continuously shallow, so that the acid fracturing integrated pipe column can shrink due to the reduction of the temperature of the current environment, and the first expansion joint 9 and the second expansion joint 10 can shrink to replace the shrinkage caused by the shrinkage.
The telescopic joint that this application embodiment provided can guarantee that acid fracturing integration tubular column is going into or the in-process of play out under, will compensate owing to extension or shrink that temperature variation produced, prevents that acid fracturing integration tubular column from damaging owing to inflation or shrink, has improved the security of acid fracturing integration tubular column in the work progress, has also improved the success rate of acid fracturing integration tubular column in the work progress.
Optionally, the acid fracturing integrated tubular column further comprises a hydraulic bypass valve 8, and the hydraulic bypass valve 8 is sleeved outside the oil pipe. Wherein the hydraulic bypass valve 8 is located above the RTTS packer 2.
After the hydraulic bypass valve 8 is opened, the pressure at the lower layer of the RTTS packer 2 can be released.
Optionally, the acid fracturing integrated tubular column provided by the embodiment of the present application further includes an RD circulation valve 11, and the RD circulation valve 11 is sleeved outside the oil pipe. Wherein the RD circulation valve 11 is located below the test tool, or the RD circulation valve 11 is located above the test tool, or the RD circulation valve 11 is located elsewhere.
In this embodiment, the RD circulation valve 11 is a backup valve, and in the case that the RDs circulation valve 5 cannot be opened, the RD circulation valve 11 is opened, so that the RD circulation valve 11 replaces the RDs circulation valve 5, the oil pipe is communicated with the annular space, and the oil pipe located below the RD circulation valve 11 is blocked. And in the case where the RDS recirculation valve 5 can be normally opened, the RD recirculation valve 11 is kept closed.
The RD circulation valve 11 can also be replaced by an RDs circulation valve 5, and the embodiment of the present invention is not limited thereto.
The RD circulating valve 11 that this application embodiment provided is as reserve valve, under the unable circumstances of opening of RDS circulating valve 5, opens RD circulating valve 11 to guarantee the construction procedure normal operating, improved the accuracy of work progress, and also guaranteed the security of construction.
Optionally, the acid fracturing integrated tubular column in the embodiment of the present application further includes a jar 12, and the jar 12 is sleeved outside the oil pipe. Wherein the jar 12 is located above the Y241 packer 4, or the jar 12 is located above the test tool, or the jar 12 is located elsewhere.
In this application embodiment, if accomplish the construction back through this acid fracturing integration tubular column, follow-up needs will be with this acid fracturing integration tubular column deblocking, and then play out acid fracturing integration tubular column from the oil well, and because acid fracturing integration tubular column bears pressure in the well, the deblocking of acid fracturing integration tubular column probably can't be accomplished, starts jar 12 this moment, shakes through this jar 12, so that it is not hard up to make acid fracturing integration tubular column, and then accomplishes the deblocking of acid fracturing integration tubular column.
Alternatively, the jar 12 may provide a jarring force of 30 tons, 40 tons, 60 tons, or other values.
The jar 12 that this application embodiment provided promotes the acid fracturing integration tubular column deblocking through providing the jarring power, and then improves the success rate of getting out the acid fracturing integration tubular column.
Optionally, the acid fracturing integrated tubular column provided by the embodiment of the application further comprises a first safety joint, a second safety joint and a third safety joint, and the first safety joint, the second safety joint and the third safety joint are sleeved outside the oil pipe. Wherein the first safety joint is located above the test tool, the second safety joint is located above the RTTS, and the third safety joint is located above the Y241 packer 4.
In the embodiment of the application, because the situation that the RTTS packer 2 and the Y241 packer 4 cannot be unsealed and the acid fracturing integrated tubular column is lifted out may occur in the lifting-out process of the acid fracturing integrated tubular column, the third safety joint is disconnected, the Y241 packer 4 is separated, the acid fracturing integrated tubular column except the Y241 packer 4 is lifted out, if the tubular column cannot be lifted out, the second safety joint is disconnected, the acid fracturing integrated tubular column except the RTTS packer 2 is lifted out, if the tubular column cannot be lifted out, the first safety joint is disconnected, the acid fracturing integrated tubular column except the testing tool is lifted out,
the safety joint that this application embodiment provided can break off, abandons the part that can't play out in the integration tubular column of acid fracturing, and then can play out other parts in the integration tubular column of acid fracturing, prevents that the integration tubular column of acid fracturing from blockking up the oil well.
It should be noted that, the various alternative embodiments in the present application can be combined with each other to realize a new tubular column, and the present application does not limit the combination manner.
Fig. 2 is a flowchart of an acid fracturing method provided in an embodiment of the present application. The method is applied to the acid fracturing integrated pipe column, and the acid fracturing integrated pipe column comprises the following steps: the testing tool, the OMNI valve, the RTTS packer, the fracturing sliding sleeve, the Y241 packer and the oil pipe are sleeved outside the oil pipe; the method comprises the following steps:
201. and perforating the oil well in a well killing fluid environment.
In the embodiment of the application, as the running casing and the stratum are in a sealed state, when the stratum is acidized, the casing in the oil well is perforated firstly, so that the oil well is communicated with the stratum.
202. And (4) performing drifting scraping on the casing.
Because including impurity in the sleeve pipe, consequently carry out the drifting and scrape to the sleeve pipe earlier to the impurity object in the clearance sleeve pipe guarantees the inside cleanness of sleeve pipe.
203. And (3) putting the acid fracturing integrated pipe column into the casing pipe in a well killing fluid environment.
204. Setting the RTTS packer, sealing an annular space which is positioned between the oil pipe and the sleeve and is positioned below the RTTS packer, opening the OMNI valve to communicate the oil pipe with the annular space, injecting acid liquor into the oil pipe, and discharging the well killing fluid from the annular space between the oil pipe and the sleeve.
205. And when the injection amount of the acid liquor reaches a preset liquid amount, determining that the acid liquor reaches a preset position, applying pressure to the oil pipe, discharging the acid liquor in the oil pipe into an annular space below the RTTS packer from the oil pipe under the action of the pressure, fracturing the stratum from the annular space, and enabling the stratum to enter a gap of the stratum.
206. The OMNI valve closes to seal off tubing from the annulus, the Y241 packer seats to seal off the annulus between the tubing and the casing and below the packer.
207. Acid liquid is injected into the oil pipe, pressure is applied to the oil pipe, and the acid liquid in the oil pipe is discharged into an annular space below the Y241 packer from the oil pipe under the action of the pressure and enters gaps of the stratum from the annular space.
208. And opening the fracturing sliding sleeve, injecting acid liquor into the oil pipe, applying pressure to the oil pipe, and discharging the acid liquor in the oil pipe into an annular space below the Y241 packer from the oil pipe under the action of the pressure and entering a gap of a stratum from the annular space.
209. And opening the RDS circulating valve, communicating the oil pipe with the annular space, plugging the oil pipe positioned below the RDS circulating valve, and collecting a liquid sample in the stratum.
210. The pressure gauge supporting cylinder measures the pressure in the oil pipe and the sleeve pipe and uploads the measured pressure to the control equipment.
211. And (6) pulling out the acid fracturing integrated pipe column.
After the acidification of the gaps of the stratum in the oil well is finished, the test of the stratum is finished, and the acid fracturing integrated pipe column can be pulled out subsequently.
The method that this application embodiment provided, can seal off the annular space between oil pipe and the sleeve pipe through RTTS packer and Y241 packer, can separate the annular space that is located RTTS packer below through Y241 packer, inject the acidizing fluid into the stratum through separated annular space, the transformation to the stratum is accomplished in the layering, and can gather the liquid sample and oil pipe and the sheathed tube pressure in the stratum through the testing tool, and then accomplish the test of stratum, this acid fracturing integration tubular column is applicable to the acidizing of the stratum that is big to thickness, the layering is acidized the stratum, the efficiency of the stratum to the oil well has been improved, the comprehensiveness of acidizing the stratum has been improved, the transformation scope to the stratum has been expanded.
In a possible implementation mode, the acid fracturing integrated tubular column further comprises a positioning short section, and the positioning short section is sleeved on the outer side of the oil pipe; the method further comprises the following steps: and the positioning short section measures the current depth of the positioning short section.
When the acid fracturing integrated pipe column is put in, the current depth of the acid fracturing integrated pipe column can be located through the locating short section, and the acid fracturing integrated pipe column is put in the construction position according to the depth measured by the locating short section so as to carry out acid treatment on the gap of the stratum at the construction position.
In another possible implementation manner, the acid fracturing integrated tubular column further comprises a hydraulic bypass valve, the hydraulic bypass valve is sleeved outside the oil pipe, and the hydraulic bypass valve is an upper bypass of the RTTS packer; the method further comprises the following steps: and releasing the pressure at the lower layer of the RTTS packer through a hydraulic bypass valve.
In another possible implementation manner, the acid fracturing integrated tubular column further comprises an RD circulating valve, and the RD circulating valve is sleeved outside the oil pipe; the method further comprises the following steps:
under the condition that the RDS circulating valve cannot be opened, the RD circulating valve is opened, the oil pipe is communicated with the annular space, and the oil pipe positioned below the RD circulating valve is blocked;
alternatively, the RDS recirculation valve is held closed with the RDS recirculation valve open.
The RD circulating valve that this application embodiment provided is as reserve valve, under the unable circumstances of opening of RDS circulating valve, opens the RD circulating valve to guarantee the construction process normal operating, improved the accuracy of work progress, and also guaranteed the security of construction.
In another possible implementation manner, the acid fracturing integrated tubular column further comprises a jar, and the jar is sleeved outside the oil pipe; the method further comprises the following steps:
the jar is jarred to play out acid fracturing integrated tubular column.
The jar that this application embodiment provided is through providing the jarring power in order to promote the acid fracturing integration tubular column deblocking, and then improves the success rate of drawing out acid fracturing integration tubular column.
The above description is only for facilitating the understanding of the technical solutions of the present application by those skilled in the art, and is not intended to limit the present application. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (14)
1. The utility model provides an acid fracturing integration tubular column which characterized in that, acid fracturing integration tubular column includes:
the testing tool comprises an OMNI valve (1), an RTTS packer (2), a fracturing sliding sleeve (3), a Y241 packer (4) and an oil pipe, wherein the testing tool, the OMNI valve (1), the RTTS packer (2), the fracturing sliding sleeve (3) and the Y241 packer (4) are sleeved on the outer side of the oil pipe, and the testing tool comprises an RDS circulating valve (5) and a pressure gauge support cylinder (6);
in the environment of well killing fluid, the acid fracturing integrated pipe column is put into the casing;
setting the RTTS packer (2), sealing an annular space which is positioned between the oil pipe and the casing and below the RTTS packer (2), opening the OMNI valve (1), communicating the oil pipe with the annular space, injecting acid liquor into the oil pipe, and discharging the well killing fluid from the annular space between the oil pipe and the casing;
the injection amount of the acid liquor reaches a preset liquid amount, the OMNI valve (1) is closed, the oil pipe and the annular space are sealed, pressure is applied to the oil pipe, the acid liquor in the oil pipe is under the action of the pressure, is discharged into the annular space below the RTTS packer (2) from the oil pipe, fractures the stratum from the annular space and enters gaps of the stratum;
the Y241 packer (4) is set to seal off an annular space between the tubing and the casing below the Y241 packer (4);
injecting acid liquid into the oil pipe, applying pressure to the oil pipe, and discharging the acid liquid in the oil pipe into the annular space below the Y241 packer (4) and into gaps of the stratum from the annular space under the action of the pressure;
the fracturing sliding sleeve (3) is opened, acid liquor is injected into the oil pipe, pressure is applied to the oil pipe, and the acid liquor in the oil pipe is subjected to the pressure, is discharged from the oil pipe into the annular space below the Y241 packer (4) and enters gaps of the stratum from the annular space;
opening the RDS circulating valve (5), communicating the oil pipe with the annular space, plugging the oil pipe below the RDS circulating valve (5), and collecting a liquid sample in the stratum;
the pressure gauge support cylinder (6) is used for measuring the pressure in the oil pipe and the sleeve pipe and uploading the measured pressure to control equipment.
2. The acid fracturing integrated pipe string according to claim 1, further comprising a positioning nipple (7), wherein the positioning nipple (7) is sleeved outside the oil pipe;
the positioning short section (7) is used for measuring the current depth of the positioning short section (7).
3. The acid fracturing integrated pipe column according to claim 1, further comprising a hydraulic bypass valve (8), wherein the hydraulic bypass valve (8) is sleeved outside the oil pipe; the hydraulic bypass valve (8) is used for bypassing the upper part of the RTTS packer (2);
the hydraulic bypass valve (8) is used for releasing the pressure at the lower layer of the RTTS packer (2).
4. The acid fracturing integrated string of claim 1, comprising a first telescopic joint (9) and a second telescopic joint (10); the first expansion joint (9) and the second expansion joint (10) are sleeved outside the oil pipe;
when the acid fracturing integrated pipe column is expanded with heat, the first expansion joint (9) and the second expansion joint (10) are extended to supplement the stretching caused by expansion, and when the acid fracturing integrated pipe column is contracted with cold, the first expansion joint (9) and the second expansion joint (10) are shortened to supplement the contraction caused by contraction.
5. The acid fracturing integrated string according to claim 1, further comprising an RD circulation valve (11), wherein the RD circulation valve (11) is sleeved outside the oil pipe;
in the case that the RDS circulating valve (5) cannot be opened, opening the RD circulating valve (11), communicating the oil pipe with the annular space, and blocking the oil pipe below the RD circulating valve (11);
or, keeping the RD circulation valve (11) closed in case the RDS circulation valve (5) is opened.
6. The acid fracturing integrated pipe string according to claim 1, further comprising a jar (12), wherein the jar (12) is sleeved outside the oil pipe;
the jar (12) is used for jar, and the acid fracturing integrated pipe column is pulled out.
7. The acid fracturing integrated string of claim 1, further comprising a hydraulic anchor (13); the hydraulic anchor (13) is positioned above the RTTS packer (2);
the hydraulic anchor (13) is used for fixing the RTTS packer (2).
8. An integrated acid fracturing string according to any of claims 1 to 7, wherein the maximum pressure that the Y241 packer (4) can withstand is less than 80 MPa.
9. The integrated acidizing string according to claim 1, further comprising a ball seat located at the lower end of the Y241 packer (4);
and the valve ball is thrown into the oil pipe, and the oil pipe is blocked when the ball seat is contacted with the valve ball.
10. An acid fracturing method is applied to an acid fracturing integrated column, and the acid fracturing integrated column comprises the following steps: the testing tool, the OMNI valve, the RTTS packer, the fracturing sliding sleeve, the Y241 packer and the oil pipe are sleeved outside the oil pipe; the method comprises the following steps:
in the environment of well killing fluid, the acid fracturing integrated pipe column is put into the casing;
setting the RTTS packer, sealing off an annular space which is positioned between the oil pipe and the casing and is positioned below the RTTS packer, opening the OMNI valve, communicating the oil pipe with the annular space, injecting acid liquor into the oil pipe, and discharging the well killing fluid from the annular space between the oil pipe and the casing;
the injection amount of the acid liquor reaches a preset liquid amount, the acid liquor is determined to reach a preset position, pressure is applied to the oil pipe, the acid liquor in the oil pipe is under the action of the pressure, is discharged into the annular space below the RTTS packer from the oil pipe, fractures the stratum from the annular space and enters gaps of the stratum;
the OMNI valve is closed to seal the oil pipe from the annular space, the Y241 packer is set to seal the annular space between the oil pipe and the casing pipe and below the Y241 packer;
injecting acid liquid into the oil pipe, applying pressure to the oil pipe, and discharging the acid liquid in the oil pipe into the annular space below the Y241 packer and into gaps of the stratum from the annular space under the action of the pressure;
the fracturing sliding sleeve is opened, acid liquor is injected into the oil pipe, pressure is applied to the oil pipe, and the acid liquor in the oil pipe is discharged into the annular space below the Y241 packer from the oil pipe under the action of the pressure and enters gaps of the stratum from the annular space;
opening the RDS circulating valve, communicating the oil pipe with the annular space, plugging the oil pipe positioned below the RDS circulating valve, and collecting a liquid sample in the stratum;
the pressure gauge supporting cylinder measures the pressure in the oil pipe and the pressure in the sleeve pipe, and the measured pressure is uploaded to the control equipment.
11. The method of claim 10, wherein the acid fracturing integrated string further comprises a locating nipple sleeved outside the oil pipe; the method further comprises the following steps:
and the positioning short section measures the current depth of the positioning short section.
12. The method of claim 10, wherein the frac integrated string further comprises a hydraulic bypass valve, the hydraulic bypass valve is sleeved outside the tubing, and the hydraulic bypass valve is an upper bypass of the RTTS packer; the method further comprises the following steps:
and releasing the pressure at the lower layer of the RTTS packer through the hydraulic bypass valve.
13. The method of claim 10, wherein the sour integrated string further comprises an RD circulation valve sleeved outside the tubing; the method further comprises the following steps:
under the condition that the RDS circulating valve cannot be opened, opening the RD circulating valve, communicating the oil pipe with the annular space, and blocking the oil pipe below the RD circulating valve;
alternatively, the RDS circulation valve is maintained closed with the RDS circulation valve open.
14. The method of claim 10, wherein the acid fracturing integrated string further comprises a jar sleeved outside the tubing; the method further comprises the following steps:
and the jar jars to lift out the acid fracturing integrated pipe column.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011407518.9A CN114607343B (en) | 2020-12-03 | 2020-12-03 | Acid fracturing integrated tubular column and acid fracturing method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011407518.9A CN114607343B (en) | 2020-12-03 | 2020-12-03 | Acid fracturing integrated tubular column and acid fracturing method |
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| CN114607343A true CN114607343A (en) | 2022-06-10 |
| CN114607343B CN114607343B (en) | 2024-03-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117868803A (en) * | 2024-03-13 | 2024-04-12 | 中石化西南石油工程有限公司 | Four-combined test pipe column suitable for ultra-deep well oil and gas well and use method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1677281A1 (en) * | 1989-09-19 | 1991-09-15 | Ивано-Франковский Институт Нефти И Газа | Device for developing and operating wells |
| CN102268972A (en) * | 2011-08-04 | 2011-12-07 | 荆州市翔龙石油科技有限公司 | Method for preventing setting failure of packer resulted from creeping of pipe string |
| CN205532521U (en) * | 2016-02-01 | 2016-08-31 | 中国石油天然气股份有限公司 | Ally oneself with and make tubular column |
| CN107916918A (en) * | 2017-11-16 | 2018-04-17 | 中国石油集团川庆钻探工程有限公司 | Reservoir separate zone stimulation tool tubular column and fracture acidizing method |
| CN110778288A (en) * | 2019-11-28 | 2020-02-11 | 中国石油集团川庆钻探工程有限公司 | Integrated downhole operation tool based on bidirectional slip recoverable hydraulic packer |
-
2020
- 2020-12-03 CN CN202011407518.9A patent/CN114607343B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1677281A1 (en) * | 1989-09-19 | 1991-09-15 | Ивано-Франковский Институт Нефти И Газа | Device for developing and operating wells |
| CN102268972A (en) * | 2011-08-04 | 2011-12-07 | 荆州市翔龙石油科技有限公司 | Method for preventing setting failure of packer resulted from creeping of pipe string |
| CN205532521U (en) * | 2016-02-01 | 2016-08-31 | 中国石油天然气股份有限公司 | Ally oneself with and make tubular column |
| CN107916918A (en) * | 2017-11-16 | 2018-04-17 | 中国石油集团川庆钻探工程有限公司 | Reservoir separate zone stimulation tool tubular column and fracture acidizing method |
| CN110778288A (en) * | 2019-11-28 | 2020-02-11 | 中国石油集团川庆钻探工程有限公司 | Integrated downhole operation tool based on bidirectional slip recoverable hydraulic packer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117868803A (en) * | 2024-03-13 | 2024-04-12 | 中石化西南石油工程有限公司 | Four-combined test pipe column suitable for ultra-deep well oil and gas well and use method thereof |
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| CN114607343B (en) | 2024-03-26 |
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