CN114622859B - Novel cutting combined ball and cutting process - Google Patents
Novel cutting combined ball and cutting process Download PDFInfo
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- CN114622859B CN114622859B CN202210367811.XA CN202210367811A CN114622859B CN 114622859 B CN114622859 B CN 114622859B CN 202210367811 A CN202210367811 A CN 202210367811A CN 114622859 B CN114622859 B CN 114622859B
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- ball
- chemical
- oil pipe
- continuous oil
- cutting
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- 238000005520 cutting process Methods 0.000 title claims abstract description 42
- 239000000126 substance Substances 0.000 claims abstract description 99
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 239000002283 diesel fuel Substances 0.000 claims description 13
- 238000005086 pumping Methods 0.000 claims description 13
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 claims description 11
- 239000011148 porous material Substances 0.000 claims description 10
- 239000002253 acid Substances 0.000 claims description 8
- 239000002360 explosive Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- 239000003638 chemical reducing agent Substances 0.000 claims description 5
- 238000004880 explosion Methods 0.000 claims description 4
- SPSSULHKWOKEEL-UHFFFAOYSA-N 2,4,6-trinitrotoluene Chemical group CC1=C([N+]([O-])=O)C=C([N+]([O-])=O)C=C1[N+]([O-])=O SPSSULHKWOKEEL-UHFFFAOYSA-N 0.000 claims description 3
- 239000000028 HMX Substances 0.000 claims description 3
- 239000003721 gunpowder Substances 0.000 claims description 3
- UZGLIIJVICEWHF-UHFFFAOYSA-N octogen Chemical compound [O-][N+](=O)N1CN([N+]([O-])=O)CN([N+]([O-])=O)CN([N+]([O-])=O)C1 UZGLIIJVICEWHF-UHFFFAOYSA-N 0.000 claims description 3
- 239000007800 oxidant agent Substances 0.000 claims description 3
- 230000009182 swimming Effects 0.000 claims description 3
- 239000000015 trinitrotoluene Substances 0.000 claims description 3
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 claims description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 2
- 239000003513 alkali Substances 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- BIVUUOPIAYRCAP-UHFFFAOYSA-N aminoazanium;chloride Chemical group Cl.NN BIVUUOPIAYRCAP-UHFFFAOYSA-N 0.000 claims description 2
- 239000013043 chemical agent Substances 0.000 claims description 2
- QHDUJTCUPWHNPK-UHFFFAOYSA-N methyl 7-methoxy-2h-indazole-3-carboxylate Chemical compound COC1=CC=CC2=C(C(=O)OC)NN=C21 QHDUJTCUPWHNPK-UHFFFAOYSA-N 0.000 claims description 2
- UCPYLLCMEDAXFR-UHFFFAOYSA-N triphosgene Chemical group ClC(Cl)(Cl)OC(=O)OC(Cl)(Cl)Cl UCPYLLCMEDAXFR-UHFFFAOYSA-N 0.000 claims description 2
- 230000001590 oxidative effect Effects 0.000 claims 2
- 238000002844 melting Methods 0.000 claims 1
- 230000008018 melting Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 9
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000004952 Polyamide Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
Classifications
-
- 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
- E21B29/00—Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
- E21B29/02—Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground by explosives or by thermal or chemical means
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Lubricants (AREA)
Abstract
The invention discloses a novel cutting combined ball, which comprises a chemical ball and a hole ball. The invention further relates to a process for cutting the coiled tubing by using the cutting combination ball. The process of the invention can cut off the continuous oil pipe at fixed points, thereby ensuring the continuous oil pipe of the whole disc to be used continuously. The process of the invention greatly reduces the salvage operation difficulty and saves the salvage cost; and the extreme case that the whole oil gas well is scrapped can be avoided.
Description
Technical Field
The invention belongs to the field of oil gas and other energy operation, relates to fixed-point cutting of a continuous oil pipe, in particular to a novel cutting combination ball for cutting the continuous oil pipe, and further relates to a cutting process using the cutting combination ball.
Background
During oilfield operations, special conditions occur, and the coiled tubing string is most complex to be stuck in the well and difficult to handle. In general, the outer diameter of the tool is larger than that of the pipe column, most of clamping points are at the tool, the pipe column is sometimes required to be cut above the clamping points, and then the pipe column capable of freely moving is lifted out so as to be convenient for the next step of treatment, and chemical cutting is an ideal means. The existing chemical cutting process needs to cut off the continuous oil pipe before implementing the process, and then send the chemical cutting bomb into the continuous oil pipe through steel wires, cables and other transmission equipment and then lower the chemical cutting bomb into the target depth. The coiled tubing cutting operation divides the whole coiled tubing into two parts, so that the respective lengths of the two parts cannot meet the operation length requirement of a construction well.
In addition, once the coiled tubing is clamped, the coiled tubing can not be normally unclamped, before the coiled tubing is cut above the clamping point, the coiled tubing needs to be cut off at a wellhead, transmission equipment such as steel wires and cables can be put into the coiled tubing through the inner drift diameter of the coiled tubing, the coiled tubing is cut off above the clamping point, and once the coiled tubing is cut off at the wellhead, the whole disc of expensive coiled tubing is scrapped.
In addition, some coiled tubing has a small inner diameter, and the conventional transmission equipment such as steel wires, cables and the like cannot pass through the coiled tubing with such a small inner diameter. Under the condition that the continuous oil pipe is blocked at the tool string, how to cut the continuous oil pipe without cutting the continuous oil pipe at a wellhead and cut the continuous oil pipe with small inner diameter above the blocking point, and finally, the continuous oil pipe is smoothly lifted out, so that the continuous oil pipe becomes a field problem to be solved by operators.
Aiming at the problems, the invention provides a novel cutting combined ball for fixed-point cutting of a continuous oil pipe, which consists of a hole ball and a chemical ball. In the method, the coiled tubing is cut off at fixed points by selecting proper hole ball and chemical ball sizes and carrying out chemical reaction by filling the hole ball and throwing the chemical ball according to the characteristic that the coiled tubing equipment can throw balls, so that the whole coiled tubing can be preserved for continuous utilization. Meanwhile, the method can also be applied to the coiled tubing with small inner diameter. The process of the invention greatly reduces the difficulty of the subsequent salvage operation and saves the salvage cost; it is particularly advantageous that extreme cases of rejection of the entire oil and gas well can be avoided.
Disclosure of Invention
The invention aims to provide a novel cutting combination ball for fixed-point cutting of a continuous oil pipe, which comprises a chemical ball and a hole ball.
The pore ball is in a sphere shape or a sphere-like shape, the inside of the pore ball is hollow, the outside of the pore ball is in a honeycomb structure, fluid can pass through the pore ball, the internal channel of the continuous oil pipe cannot be blocked, and the subsequent ball can be continuously pumped in place. The outer diameter of the hole ball is smaller than the inner diameter of the continuous oil pipe.
The pore balls are used for filling, and the pore balls can resist acid and alkali chemical agents commonly used in the oil and gas field, for example, polypropylene (PP), polyamide (PA), graphite, ceramic and the like.
The combination ball may comprise two, three or more chemical balls. The surface of the chemical sphere is provided with a water-soluble coating film, such as polyvinyl alcohol.
In one embodiment, the composite sphere comprises chemical sphere a and chemical sphere B, where the two chemical spheres meet to react chemically.
The chemical balls A and B are spherical or spheroid, are provided with crossed inner channels, can enable fluid to pass through, and can not block the inner channels of the continuous oil pipe. The chemical balls a are made of an oxidizer substance, such as urea nitrate, ammonium nitrate. The chemical balls B are mainly high-temperature release hydrochloric acid materials such as triphosgene and contain a certain amount of reducing agent such as hydrazine hydrochloride, aluminum powder and magnesium powder, wherein the weight ratio of the release hydrochloric acid materials to the reducing agent is 5:1 to 3:1, such as 4.5:1, 4:1, 4.25:1 and 3.5:1.
When the continuous oil pipe is used, for example, the chemical balls A and B are respectively carried and piled on the hole balls through diesel oil, then clean water is pumped into the hole balls to completely replace diesel oil in the continuous oil pipe with clean water, after the water soluble film is dissolved by clean water in the continuous oil pipe, the chemical balls A and B undergo severe oxidation-reduction reaction at first, so that the chemical balls B are decomposed, and then acid generated by dissolution of the chemical balls A and hydrochloric acid released by decomposition of the chemical balls B form a strong corrosive acid solution, so that the continuous oil pipe is corroded.
In another embodiment, the combination sphere comprises chemical sphere a, chemical sphere B, and chemical sphere C.
The chemical sphere C is spherical or spheroid, or swimming bladder or shuttle, and the material is known explosive bodies which are conventionally available in the oil and gas field, such as solid gunpowder or solid explosive type explosive agents, for example trinitrotoluene (TNT), black soxygen (RDX) and octogen (HMX).
The invention further relates to a novel cutting process for fixed-point cutting of coiled tubing, characterized in that it is performed using the cutting combination ball according to the invention, comprising the steps of:
1) Selecting proper hole ball size and number and proper chemical ball size according to the inner diameter channel length of the downhole tool string and the inner diameter of the continuous oil pipe;
2) A plurality of hole balls are thrown into an inner diameter channel of the continuous oil pipe through a ball throwing position of a roller of the continuous oil pipe equipment;
3) After the hole ball is put into, putting a chemical ball A into the hole ball;
4) After pumping diesel oil with one oil pipe volume, putting the chemical ball B;
5) Pumping clear water to completely replace diesel oil in the continuous oil pipe with clear water, and dissolving the water-soluble coating of the chemical ball by the clear water in the continuous oil pipe;
6) The chemical ball A and the chemical ball B are subjected to chemical reaction on the last hole ball, corresponding acid is released respectively, a strong corrosive acid solution is formed, and a continuous oil pipe at the upper part of the tool string is eroded so as to cut off the continuous oil pipe at fixed points;
7) Lifting the continuous oil pipe, and if the continuous oil pipe can be lifted normally, completing the operation; if the continuous oil pipe is not lifted, the chemical ball A and the chemical ball B are repeatedly put into the continuous oil pipe until the continuous oil pipe is cut off and can be lifted normally.
In another embodiment, the novel cutting process of the present invention comprises the steps of:
1) Selecting proper hole ball size and number and proper chemical ball size according to the inner diameter channel length of the downhole tool string and the inner diameter of the continuous oil pipe;
2) A plurality of hole balls are thrown into the inner diameter of the continuous oil pipe through the ball throwing position of the continuous oil pipe equipment roller;
3) After the hole ball is put into, putting a chemical ball A into the hole ball;
4) After pumping diesel oil with one oil pipe volume, putting the chemical ball B;
5) Pumping clear water to completely replace diesel oil in the continuous oil pipe with clear water, and dissolving the water-soluble coating of the chemical ball by the clear water in the continuous oil pipe;
6) Pumping clear water and then pumping chemical balls C;
7) The chemical ball A and the chemical ball B are subjected to chemical reaction on the last pore ball, and the temperature is increased by heat generated by the reaction;
8) The chemical ball C is exploded due to the temperature rise caused by the reaction of the chemical ball A and the chemical ball B, and the explosion is generated to cut off the coiled tubing at the upper part of the tool string at fixed points;
9) Attempting to lift the continuous oil pipe, and if the continuous oil pipe can be lifted normally, completing the operation; if the lifting is not moving, repeating the steps 2) to 8) until the oil pipe is cut off and can be lifted normally.
Under the condition of thicker oil pipe wall, chemical balls can be thrown into the oil pipe in batches for multiple times, and after the previous group of reaction, the next group of chemical balls are thrown into the oil pipe to increase the total corrosion medicine dosage or generate multiple groups of high-temperature explosions, so that the cutting operation is completed.
In the step 2), the hole balls are thrown for filling, and the throwing quantity of the hole balls is based on that the total height of the stacked hole balls is not lower than the length of the inner diameter channel of the tool string, and is preferably slightly higher than the length of the inner diameter channel of the tool string.
The novel fixed-point cutting process has the advantages that: under the condition that the operation tool string is blocked in the well and various blocking-releasing measures are invalid, the cutting process can effectively solve the problem. On one hand, after the coiled tubing at the upper part of the tool string is cut off at fixed points, the coiled tubing can be lifted out, so that the cutting of the coiled tubing is avoided, the whole coiled tubing is ensured, and the coiled tubing can be continuously utilized; on the other hand, the method can also be applied to coiled tubing with small inner diameter without any limitation. The method of the invention greatly reduces the difficulty of the subsequent salvage operation and greatly saves the salvage cost; most importantly, the extreme case of scrapping the whole oil and gas well is avoided.
Drawings
FIG. 1 is a schematic diagram of the structure of the perforated ball according to the present invention.
FIG. 2 is a schematic view of the structure of the chemical sphere A of the present invention.
FIG. 3 is a schematic view of the structure of a chemical sphere B according to the present invention.
Fig. 4 is a schematic view showing a half-section of a cutting operation state performed using the cutting combination ball (hole ball + chemical ball a and chemical ball B) according to the present invention.
Description of the reference numerals
1. A hole ball; 2. chemical ball A; 3. a chemical ball B; 4. a coiled tubing; 5. tool string.
Detailed Description
The cutting process using the cutting composite ball of the present invention will be described in further detail by way of examples using chemical balls A, B and C having water-soluble coating films as examples.
Example 1:
pore ball + chemical ball a + chemical ball B
When the working tool string is blocked in the well, firstly, according to the inner diameter length of the tool string, the number of required hole balls is calculated, and the required hole balls are thrown into the tool string one by one through the ball throwing position of the roller of the continuous oil pipe equipment. Then, putting the chemical balls A into the ball throwing position of the roller of the continuous oil pipe equipment; after diesel oil with one oil pipe volume is pumped, chemical balls B are put into the ball throwing position of the roller of the continuous oil pipe equipment. Pumping clear water to replace diesel oil in the continuous oil pipe with clear water, and dissolving the chemical ball water-soluble film with clear water in the continuous oil pipe. The chemical ball A and the chemical ball B are subjected to chemical reaction on the last hole ball, corresponding acid is released respectively, a strong corrosive acid solution is formed, and the coiled tubing at the upper part of the tool string is eroded so as to cut off the coiled tubing at fixed points. Attempting to lift the coiled tubing, if the coiled tubing is lifted normally, indicating that the coiled tubing is released; and if the lifting is not movable, continuously throwing the chemical ball A and the chemical ball B until the oil pipe is cut off and can be lifted normally.
Example 2:
pore ball + chemical ball a + chemical ball B + chemical ball C
When the working tool string is blocked in the well, firstly, according to the inner diameter length of the tool string, the number of required hole balls is calculated, and the required hole balls are thrown into the tool string one by one through the ball throwing position of the roller of the continuous oil pipe equipment. Then, putting the chemical balls A into the ball throwing position of the roller of the continuous oil pipe equipment; after diesel oil with one oil pipe volume is pumped, chemical balls B are put into the ball throwing position of the roller of the continuous oil pipe equipment. After pumping diesel oil in the volume of one oil pipe, pumping clear water to replace the diesel oil in the continuous oil pipe with clear water, and dissolving the chemical ball water-soluble film with the clear water in the continuous oil pipe. Immediately throwing chemical balls C at the ball throwing position of the roller of the continuous oil pipe equipment while pumping clear water; finally, the chemical balls A, B, C are piled up together, and the chemical balls C explode due to the high temperature generated by the reaction of the chemical balls A and the chemical balls B, so that the explosion is instantaneously generated, and the coiled tubing is cut off at fixed points. Then, trying to lift the continuous oil pipe, if the continuous oil pipe is lifted normally, indicating that the continuous oil pipe is released; and if the lifting is not movable, repeating the steps of putting the hole ball and the chemical ball until the oil pipe is cut off and can be lifted normally.
Claims (6)
1. A novel cutting combined ball for fixed-point cutting of a continuous oil pipe comprises a chemical ball A, a chemical ball B, a chemical ball C and a hole ball; wherein the chemical ball A is made of oxidant substances, and the oxidant substances in the chemical ball A are urea nitrate and ammonium nitrate; the chemical ball B comprises a high-temperature release hydrochloric acid material and a certain amount of reducing agent; wherein in the chemical ball B, the weight ratio of the hydrochloric acid releasing material to the reducing agent is 5:1 to 3:1, a step of; the high-temperature release hydrochloric acid material in the chemical ball B is triphosgene; the reducing agent is hydrazine hydrochloride, aluminum powder and magnesium powder; the chemical ball C is made of solid gunpowder or solid explosive high-explosive agent, and the solid gunpowder or solid explosive high-explosive agent is trinitrotoluene, black soxhlet and octogen.
2. The cutting combination ball of claim 1, wherein the chemical ball has a coating on a surface thereof.
3. The cutting combination ball of claim 1, wherein the hole ball is spherical or spheroid, hollow inside, and honeycomb outside, the hole ball outer diameter being less than the coiled tubing inner diameter; the material can resist acid and alkali chemical agents.
4. The cutting combination ball of claim 1, wherein the chemical ball a is spherical or spheroid with intersecting internal channels; the chemical ball B is spherical or spheroid, swimming bladder or shuttle; the chemical ball C is in a sphere shape or a swimming bladder shape or a shuttle shape.
5. A cutting process characterized by: use of a cutting combination ball according to any of the preceding claims 1-4, comprising the steps of:
1) Selecting proper hole ball size and number and proper chemical ball size according to the inner diameter channel length of the downhole tool string and the inner diameter of the continuous oil pipe;
2) A plurality of hole balls are thrown into the inner diameter of the continuous oil pipe through the ball throwing position of the continuous oil pipe equipment roller;
3) After the hole ball is put into, putting a chemical ball A into the hole ball;
4) After pumping diesel oil with one oil pipe volume, putting the chemical ball B;
5) Pumping clear water to completely replace diesel oil in the continuous oil pipe with clear water, and dissolving the coating film of the melting ball by the clear water in the continuous oil pipe;
6) Then pumping the chemical balls C;
7) The chemical ball A and the chemical ball B are subjected to chemical reaction on the last pore ball, and the temperature is increased by heat generated by the reaction;
8) The chemical ball C is exploded due to the temperature rise caused by the reaction of the chemical ball A and the chemical ball B, and the explosion is generated to cut off the coiled tubing at the upper part of the tool string at fixed points;
9) Attempting to lift the continuous oil pipe, and if the continuous oil pipe can be lifted normally, completing the operation; if the lifting is not moving, repeating the steps 2) to 8) until the oil pipe is cut off and can be lifted normally.
6. The cutting process of claim 5, wherein in step 2), the number of shots of the hole balls is such that the total height of the stack of hole balls is not less than the tool string inner diameter channel length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210367811.XA CN114622859B (en) | 2022-04-08 | 2022-04-08 | Novel cutting combined ball and cutting process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210367811.XA CN114622859B (en) | 2022-04-08 | 2022-04-08 | Novel cutting combined ball and cutting process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114622859A CN114622859A (en) | 2022-06-14 |
| CN114622859B true CN114622859B (en) | 2023-12-26 |
Family
ID=81906272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210367811.XA Active CN114622859B (en) | 2022-04-08 | 2022-04-08 | Novel cutting combined ball and cutting process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114622859B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4125161A (en) * | 1977-04-18 | 1978-11-14 | Weatherford/Dmc, Inc. | Chemical cutting apparatus and method for use in wells |
| US5551665A (en) * | 1994-04-29 | 1996-09-03 | Halliburton Company | Ball valve with coiled tubing cutting ability |
| US5853056A (en) * | 1993-10-01 | 1998-12-29 | Landers; Carl W. | Method of and apparatus for horizontal well drilling |
| CN103032598A (en) * | 2011-10-03 | 2013-04-10 | 国民油井华高英国有限公司 | Valve and method of operating a valve |
| CN103154432A (en) * | 2010-09-22 | 2013-06-12 | 欧文石油工具有限合伙公司 | Wellbore tubular cutter |
| CN203570245U (en) * | 2013-11-30 | 2014-04-30 | 华能高科(天津)油气能源工程开发有限公司 | Chemical cutter |
| CN105507838A (en) * | 2015-12-28 | 2016-04-20 | 北方斯伦贝谢油田技术（西安）有限公司 | Cumulative cutting device for thick-wall metal pipe columns |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8403037B2 (en) * | 2009-12-08 | 2013-03-26 | Baker Hughes Incorporated | Dissolvable tool and method |
| GB2493175A (en) * | 2011-07-27 | 2013-01-30 | Expro North Sea Ltd | A ball valve having a recessed cutting area |
| US20160047194A1 (en) * | 2014-08-13 | 2016-02-18 | Geodynamics, Inc. | Wellbore Plug Isolation System and Method |
-
2022
- 2022-04-08 CN CN202210367811.XA patent/CN114622859B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4125161A (en) * | 1977-04-18 | 1978-11-14 | Weatherford/Dmc, Inc. | Chemical cutting apparatus and method for use in wells |
| US5853056A (en) * | 1993-10-01 | 1998-12-29 | Landers; Carl W. | Method of and apparatus for horizontal well drilling |
| US5551665A (en) * | 1994-04-29 | 1996-09-03 | Halliburton Company | Ball valve with coiled tubing cutting ability |
| CN103154432A (en) * | 2010-09-22 | 2013-06-12 | 欧文石油工具有限合伙公司 | Wellbore tubular cutter |
| CN103032598A (en) * | 2011-10-03 | 2013-04-10 | 国民油井华高英国有限公司 | Valve and method of operating a valve |
| CN203570245U (en) * | 2013-11-30 | 2014-04-30 | 华能高科(天津)油气能源工程开发有限公司 | Chemical cutter |
| CN105507838A (en) * | 2015-12-28 | 2016-04-20 | 北方斯伦贝谢油田技术（西安）有限公司 | Cumulative cutting device for thick-wall metal pipe columns |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114622859A (en) | 2022-06-14 |
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