CN104612651A - Acidizing and blockage removing device and method for screen pipe well completion horizontal well with deformed casing - Google Patents
Acidizing and blockage removing device and method for screen pipe well completion horizontal well with deformed casing Download PDFInfo
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- CN104612651A CN104612651A CN201510038043.3A CN201510038043A CN104612651A CN 104612651 A CN104612651 A CN 104612651A CN 201510038043 A CN201510038043 A CN 201510038043A CN 104612651 A CN104612651 A CN 104612651A
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 230000020477 pH reduction Effects 0.000 claims abstract description 108
- 230000000903 blocking effect Effects 0.000 claims abstract description 37
- 238000002347 injection Methods 0.000 claims abstract description 29
- 239000007924 injection Substances 0.000 claims abstract description 29
- 239000000243 solution Substances 0.000 claims description 24
- 239000002253 acid Substances 0.000 claims description 19
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 10
- 239000002280 amphoteric surfactant Substances 0.000 claims description 10
- 230000009467 reduction Effects 0.000 claims description 9
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims description 8
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 3
- 239000004971 Cross linker Substances 0.000 claims description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims description 2
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 2
- 239000004927 clay Substances 0.000 claims description 2
- 230000007797 corrosion Effects 0.000 claims description 2
- 238000005260 corrosion Methods 0.000 claims description 2
- 230000003111 delayed effect Effects 0.000 claims description 2
- 239000003349 gelling agent Substances 0.000 claims description 2
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 2
- 235000019394 potassium persulphate Nutrition 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 239000003381 stabilizer Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 12
- 238000011161 development Methods 0.000 abstract description 6
- 230000035699 permeability Effects 0.000 abstract description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000003129 oil well Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000007634 remodeling Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- KWIUHFFTVRNATP-UHFFFAOYSA-N Betaine Natural products C[N+](C)(C)CC([O-])=O KWIUHFFTVRNATP-UHFFFAOYSA-N 0.000 description 1
- KWIUHFFTVRNATP-UHFFFAOYSA-O N,N,N-trimethylglycinium Chemical compound C[N+](C)(C)CC(O)=O KWIUHFFTVRNATP-UHFFFAOYSA-O 0.000 description 1
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 229960003237 betaine Drugs 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002981 blocking agent Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- -1 dodecyl dimethyl hydroxypropyl Chemical group 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- ILRLTAZWFOQHRT-UHFFFAOYSA-N potassium;sulfuric acid Chemical compound [K].OS(O)(=O)=O ILRLTAZWFOQHRT-UHFFFAOYSA-N 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 230000009466 transformation Effects 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
- 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
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/52—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/32—Anticorrosion additives
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Geochemistry & Mineralogy (AREA)
- Physics & Mathematics (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention provides an acidification blocking removal device of a screen pipe well completion horizontal well with deformed casing. The blockage removing device comprises a coiled tubing, a flow collecting umbrella and an injection valve, wherein the coiled tubing penetrates into a horizontal well when in use, the flow collecting umbrella surrounds the outer wall of the tail of the coiled tubing, and the injection valve is arranged at the tail end of the coiled tubing. The invention also provides an acidification blocking removing method of the screen pipe well completion horizontal well with the deformed casing, which uses the acidification blocking removing device of the screen pipe well completion horizontal well with the deformed casing. The invention changes the original acidification reconstruction method which only adopts a general mode, adopts segmented acidification, can realize uniform acidification operation of the horizontal well, increases the effective range of acidification of the horizontal well section, improves the permeability of a reservoir and improves the development effect of the horizontal well.
Description
Technical field
The present invention relates to a kind of acidification to dispel block apparatus and method of sieve tube completion horizontal well of casing deformation, belong to oil well acidation technical field.
Background technology
At present, horizontal well is as a kind of new completion mode, be widely used in oil field development to produce, horizontal well is utilized to improve oil well productivity, reduce development cost, but part of horizontal well is in brill completion, due to entry well fluid kind in the processes such as later stage operation, it is improper that density is selected, the reasons such as long soaking time cause reservoir pollution, there is casing deformation in part of horizontal well horizontal segment simultaneously, the instruments such as the interior packer of pipe cannot be used to carry out effective packing to horizontal segment, this just causes cannot implement homogeneous acidification, be merely able to the method adopting general acidifying, this have impact on the effect of acidifying transformation greatly.
Summary of the invention
In view of the defect that above-mentioned prior art exists, the object of the invention is the acidification to dispel block apparatus and method of the sieve tube completion horizontal well proposing a kind of casing deformation, the homogeneous acidification operation of this horizontal well can be realized, improve reservoir permeability, well development effect of improving the standard.
Object of the present invention is achieved by the following technical programs:
A kind of sieve tube completion horizontal well acidification to dispel block device of casing deformation, this plug-removing device comprises coiled tubing, current collecting umbrella and injection valve, described coiled tubing gos deep into horizontal well when using, described current collecting umbrella is around on the outer wall of the afterbody of described coiled tubing, and described injection valve is arranged on the tail end of described coiled tubing.
In the sieve tube completion horizontal well acidification to dispel block device of above-mentioned casing deformation, described coiled tubing is for injecting de-plugging agent, returning and mediate blocking agent, described current collecting umbrella can play the effect of packing, prevents the spilling of de-plugging agent, and described injection valve is for opening or close the injection of de-plugging agent.
In the sieve tube completion horizontal well acidification to dispel block device of above-mentioned casing deformation, preferably, described current collecting umbrella is electric-controlled type current collecting umbrella, differential current collecting umbrella or self-sealing current collecting umbrella; Preferred, described current collecting umbrella is differential current collecting umbrella.
In the sieve tube completion horizontal well acidification to dispel block device of above-mentioned casing deformation, preferably, described injection valve is mechanical type pressure reduction injection valve.
The present invention also provides a kind of sieve tube completion horizontal well acidification to dispel block method of casing deformation, and it uses the sieve tube completion horizontal well acidification to dispel block device of above-mentioned casing deformation, comprises the steps:
Step one, will enter to horizontal well first object well section under the coiled tubing of acidification to dispel block device and current collecting umbrella and injection valve;
Step 2, open described current collecting umbrella, make horizontal well first object well section form enclosure space;
Step 3, open described injection valve, acidification blocking remover is injected to described enclosure space via described coiled tubing, after acidification blocking remover enters enclosure space and diffuses into oil reservoir, when the viscosity entering the acidification blocking remover of oil reservoir is increased to 800-1000mPas by 30-50mPas, close described current collecting umbrella and described injection valve, namely complete horizontal well first object well section acidification to dispel block;
Step 4, on carry the coiled tubing of acidification to dispel block device and current collecting umbrella and injection valve to horizontal well second target well section, repeat the operation of step 2 and step 3, namely complete horizontal well second target well section acidification to dispel block;
The operation of step 5, repetition step 4, completes follow-up multiple target well section acidification to dispel block;
Step 6, after target complete well section acidification to dispel block completes, in horizontal well, inject steam and/or catalyzer, make high viscosity acidification blocking remover aquation, the acidification blocking remover of aquation is returned row.
In the sieve tube completion horizontal well acidification to dispel block method of above-mentioned casing deformation, the viscosity of acidification blocking remover changes because of the change of pH, the acidification blocking remover of initial injection, its pH value is probably between 2-3, the viscosity of acid solution is between 30-50mPas, when acidification blocking remover and after response of stratum a period of time, the pH value of acidification blocking remover rises between 4-5, and the viscosity of acid solution is increased to 800-1000mPas.Acidification blocking remover loses flowability in the earth formation.
In the sieve tube completion horizontal well acidification to dispel block method of above-mentioned casing deformation, preferably, described acidification blocking remover comprises acid solution and betaines amphoteric surfactant, and by weight, the consumption of described betaines amphoteric surfactant is 3 ‰-8 ‰ of the consumption of described acid solution; Wherein, the molecular weight of described betaines amphoteric surfactant is 200-300.
In the sieve tube completion horizontal well acidification to dispel block method of above-mentioned casing deformation, the proportionate relationship of acid solution and betaine type amphoteric surfac-tant was determined according to the required acid solution thickening time.
In the sieve tube completion horizontal well acidification to dispel block method of above-mentioned casing deformation, the concentration of acid solution is determined according to the physical property of different reservoir; Preferably, described acid solution comprises hydrochloric acid solution and/or hydrofluoric acid solution, and the concentration of described hydrochloric acid solution is 15%-28%, and the concentration of described hydrofluoric acid solution is 15%-28%.
In the sieve tube completion horizontal well acidification to dispel block method of above-mentioned casing deformation, according to concrete needs, acidification blocking remover can also add other functional components, these components are that the routine of this area is selected, preferably, this acidification blocking remover also comprises gelling agent for acid fluid, corrosion inhibiter, ferrous stability, delayed crosslinker, gel breaker.
In the sieve tube completion horizontal well acidification to dispel block method of above-mentioned casing deformation, according to concrete needs, acidification blocking remover can also add other functional components, and these components are that the routine of this area is selected, preferably, this acidification blocking remover also comprises anti-newborn demulsifier and/or clay stabilizer.
In the sieve tube completion horizontal well acidification to dispel block method of above-mentioned casing deformation, preferably, described catalyzer comprises potassium peroxydisulfate and/or ammonium persulfate.
In the sieve tube completion horizontal well acidification to dispel block method of above-mentioned casing deformation, its component scene is mixed with and obtains by acidification blocking remover.Above-mentioned acidification blocking remover is that double acting desaturation is from thick acid deblocking agent; This acidification blocking remover is in acid solution, add betaines amphoteric surfactant, and the pH value had along with acid solution raises and the characteristic of viscosity rising, makes it possible to acidifying one section, stifled one section temporarily, then next section of acidifying, finally makes horizontal segment obtain homogeneous acidification process.And after acidifying completes, in well, inject steam or catalyzer can make high viscosity acidification blocking remover aquation, thus be beneficial to the row of returning of acidification blocking remover.
Horizontal well is divided into multiple continuous print well section and carries out operation, label successively by acidification to dispel block method of the present invention, and the distance of horizontal well first object well section and well head is greater than the distance of horizontal well second target well section and well head, by that analogy; This segmented mode can make horizontal well acidification to dispel block effect evenly.
Outstanding effect of the present invention is:
The sieve tube completion horizontal well that the present invention is directed to horizontal segment casing deformation implements acidification to dispel block, change the original acidifying remodeling method that can only adopt general mode, adopt subsection acidizing, the homogeneous acidification operation of horizontal well can be realized, what increase net horizontal section acidifying is subject to effect degree, improve reservoir permeability, well development effect of improving the standard.
Accompanying drawing explanation
Fig. 1 is the structural representation of the acidification to dispel block device of embodiment casing deformation horizontal well;
Fig. 2 is the positional structure schematic diagram of acidification to dispel block device in first object well section of embodiment casing deformation horizontal well;
Fig. 3 is the positional structure schematic diagram of acidification to dispel block device in the second target well section of embodiment casing deformation horizontal well;
Fig. 4 is the positional structure schematic diagram of acidification to dispel block device in the 3rd target well section of embodiment casing deformation horizontal well.
Detailed description of the invention
In order to there be understanding clearly to technical characteristic of the present invention, object and beneficial effect, existing following detailed description is carried out to technical scheme of the present invention, but can not be interpreted as to of the present invention can the restriction of practical range.Experimental technique described in following embodiment, if no special instructions, is conventional method; Described reagent and material, if no special instructions, all can obtain from commercial channels.
Embodiment
The present embodiment provides a kind of sieve tube completion horizontal well acidification to dispel block device of casing deformation, as shown in Figure 1, this plug-removing device comprises coiled tubing 1, differential current collecting umbrella 2 and mechanical type pressure reduction injection valve 3, described coiled tubing 1 gos deep into horizontal well, described differential current collecting umbrella 2 is around in the outer wall of the afterbody of described coiled tubing 1, and described mechanical type pressure reduction injection valve 3 is arranged on the tail end of described coiled tubing 1.
The present embodiment also provides a kind of sieve tube completion horizontal well acidification to dispel block method of casing deformation, horizontal well is divided into continuous print three target well sections, and use the sieve tube completion horizontal well acidification to dispel block device of above-mentioned casing deformation, the method comprises the steps:
Step one, the coiled tubing 1 of acidification to dispel block device and differential current collecting umbrella 2 and mechanical type pressure reduction injection valve are entered for 3 times to horizontal well first object well section, as shown in Figure 2;
Step 2, open differential current collecting umbrella 2, make horizontal well first object well section form enclosure space;
Step 3, open mechanical type pressure reduction injection valve 3, acidification blocking remover is injected to above-mentioned enclosure space via coiled tubing 1, after acidification blocking remover enters enclosure space and diffuses into oil reservoir, when the viscosity entering the acidification blocking remover of oil reservoir is increased to 800mPas by 30mPas, shut off differential pressure formula current collecting umbrella 2 and mechanical type pressure reduction injection valve 3, namely complete horizontal well first object well section acidification to dispel block;
Step 4, on put forward the coiled tubing 1 of acidification to dispel block device and differential current collecting umbrella 2 and mechanical type pressure reduction injection valve 3 to horizontal well second target well section, as shown in Figure 3, repeat the operation of step 2 and step 3, namely complete horizontal well second target well section acidification to dispel block;
The operation of step 5, repetition step 4, on put forward the coiled tubing 1 of acidification to dispel block device and differential current collecting umbrella 2 and mechanical type pressure reduction injection valve 3 to horizontal well the 3rd target well section, as shown in Figure 4, repeat the operation of step 2 and step 3, complete the 3rd target well section acidification to dispel block;
Step 6, after target complete well section acidification to dispel block completes, in horizontal well, inject steam or catalyst sulfuric acid potassium, make high viscosity acidification blocking remover aquation, the acidification blocking remover of aquation is returned and drains into ground.
In the sieve tube completion horizontal well acidification to dispel block method of the casing deformation of the present embodiment, acidification blocking remover comprises acid solution (hydrochloric acid solution of concentration 20%) and betaines amphoteric surfactant (dodecyl dimethyl hydroxypropyl sulfobetaines), by weight, the consumption of described betaines amphoteric surfactant is 5 ‰ of the consumption of described acid solution.
On-the-spot applicable cases:
1, overall application situation
16 wells are applied at Uniform Horizontal Well Acidizing Technology scene, are subject to effect degree by the even of well acidizing of improving the standard, tired increasing oil 4.2 ten thousand tons, the secondary increasing oil 2625 tons of average individual well.
2, typical well example
Horizontal well 1, horizontal well 2 are 2 mouthfuls of water horizontal wells that same block is adjacent, horizontal segment length is respectively 299m, 301m, two mouthfuls of water horizontal well production times, production round are identical, all because there is the situation of low yield by oil layer pollution to a certain extent in the front two mouthfuls of wells of measure, all there is to a certain degree casing deformation in two mouthfuls of wells, acidifying measure is adopted to two mouthfuls of wells, to recover oil well productivity, horizontal well 1 adopts the sieve tube completion horizontal well acidification to dispel block method homogeneous acidification of the casing deformation of the present embodiment, and horizontal well 2 adopts conventional general acidifying.Two mouthfuls of well acid amounts, the parameter such as injection length, discharge capacity is identical.Shown in effect table 1 after two bore acidification to dispel block.
Table 1
Therefore, the sieve tube completion horizontal well that the present invention is directed to horizontal segment casing deformation implements acidification to dispel block, change the original acidifying remodeling method that can only adopt general mode, adopt subsection acidizing, the homogeneous acidification operation of horizontal well can be realized, what increase net horizontal section acidifying is subject to effect degree, improves reservoir permeability, well development effect of improving the standard.
Claims (10)
1. the sieve tube completion horizontal well acidification to dispel block device of a casing deformation, it is characterized in that: this plug-removing device comprises coiled tubing, current collecting umbrella and injection valve, described coiled tubing gos deep into horizontal well when using, described current collecting umbrella is around on the outer wall of the afterbody of described coiled tubing, and described injection valve is arranged on the tail end of described coiled tubing.
2. the sieve tube completion horizontal well acidification to dispel block device of casing deformation according to claim 1, is characterized in that: described current collecting umbrella is electric-controlled type current collecting umbrella, differential current collecting umbrella or self-sealing current collecting umbrella.
3. the sieve tube completion horizontal well acidification to dispel block device of casing deformation according to claim 2, is characterized in that: described current collecting umbrella is differential current collecting umbrella.
4. the sieve tube completion horizontal well acidification to dispel block device of casing deformation according to claim 1, is characterized in that: described injection valve is mechanical type pressure reduction injection valve.
5. a sieve tube completion horizontal well acidification to dispel block method for casing deformation, it uses the sieve tube completion horizontal well acidification to dispel block device of the casing deformation described in any one of claim 1-4, comprises the steps:
Step one, will enter to horizontal well first object well section under the coiled tubing of acidification to dispel block device and current collecting umbrella and injection valve;
Step 2, open described current collecting umbrella, make horizontal well first object well section form enclosure space;
Step 3, open described injection valve, acidification blocking remover is injected to described enclosure space via described coiled tubing, after acidification blocking remover enters enclosure space and diffuses into oil reservoir, when the viscosity entering the acidification blocking remover of oil reservoir is increased to 800-1000mPas by 30-50mPas, close described current collecting umbrella and described injection valve, namely complete horizontal well first object well section acidification to dispel block;
Step 4, on carry the coiled tubing of acidification to dispel block device and current collecting umbrella and injection valve to horizontal well second target well section, repeat the operation of step 2 and step 3, namely complete horizontal well second target well section acidification to dispel block;
The operation of step 5, repetition step 4, completes follow-up multiple target well section acidification to dispel block;
Step 6, after target complete well section acidification to dispel block completes, in horizontal well, inject steam and/or catalyzer, make high viscosity acidification blocking remover aquation, the acidification blocking remover of aquation is returned row.
6. the sieve tube completion horizontal well acidification to dispel block method of casing deformation according to claim 5, it is characterized in that: described acidification blocking remover comprises acid solution and betaines amphoteric surfactant, by weight, the consumption of described betaines amphoteric surfactant is 3 ‰-8 ‰ of the consumption of described acid solution; Wherein, the molecular weight of described betaines amphoteric surfactant is 200-300.
7. the sieve tube completion horizontal well acidification to dispel block method of casing deformation according to claim 6, it is characterized in that: described acid solution comprises hydrochloric acid solution and/or hydrofluoric acid solution, the concentration of described hydrochloric acid solution is 15%-28%, and the concentration of described hydrofluoric acid solution is 15%-28%.
8. the sieve tube completion horizontal well acidification to dispel block method of casing deformation according to claim 6, is characterized in that: this acidification blocking remover also comprises gelling agent for acid fluid, corrosion inhibiter, ferrous stability, delayed crosslinker, gel breaker.
9. the sieve tube completion horizontal well acidification to dispel block method of casing deformation according to claim 6, is characterized in that: this acidification blocking remover also comprises anti-newborn demulsifier and/or clay stabilizer.
10. the sieve tube completion horizontal well acidification to dispel block method of casing deformation according to claim 5, is characterized in that: described catalyzer comprises potassium peroxydisulfate and/or ammonium persulfate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510038043.3A CN104612651A (en) | 2015-01-26 | 2015-01-26 | Acidizing and blockage removing device and method for screen pipe well completion horizontal well with deformed casing |
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| CN201510038043.3A CN104612651A (en) | 2015-01-26 | 2015-01-26 | Acidizing and blockage removing device and method for screen pipe well completion horizontal well with deformed casing |
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Cited By (2)
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| CN114893162A (en) * | 2022-03-15 | 2022-08-12 | 中海油能源发展股份有限公司 | Horizontal screen well reservoir transformation process method |
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| CN111706259A (en) * | 2020-07-14 | 2020-09-25 | 中国石油集团渤海钻探工程有限公司 | Method for solving casing deformation by sidetracking old well paste-salt section reaming unfixed well |
| CN114893162A (en) * | 2022-03-15 | 2022-08-12 | 中海油能源发展股份有限公司 | Horizontal screen well reservoir transformation process method |
| CN114893162B (en) * | 2022-03-15 | 2023-07-28 | 中海油能源发展股份有限公司 | Horizontal screen pipe well reservoir transformation process method |
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