CN107489396B - A kind of towed cementing method of small borehole bushing window sidetracking well - Google Patents
A kind of towed cementing method of small borehole bushing window sidetracking well Download PDFInfo
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- CN107489396B CN107489396B CN201710845719.9A CN201710845719A CN107489396B CN 107489396 B CN107489396 B CN 107489396B CN 201710845719 A CN201710845719 A CN 201710845719A CN 107489396 B CN107489396 B CN 107489396B
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000012530 fluid Substances 0.000 claims abstract description 39
- 238000005553 drilling Methods 0.000 claims abstract description 34
- 239000004568 cement Substances 0.000 claims abstract description 29
- 210000002445 nipple Anatomy 0.000 claims abstract description 28
- 239000002002 slurry Substances 0.000 claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000007788 liquid Substances 0.000 claims abstract description 12
- 239000003292 glue Substances 0.000 claims description 22
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 208000034656 Contusions Diseases 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 2
- 230000001960 triggered effect Effects 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 6
- 239000003209 petroleum derivative Substances 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- XQCFHQBGMWUEMY-ZPUQHVIOSA-N Nitrovin Chemical compound C=1C=C([N+]([O-])=O)OC=1\C=C\C(=NNC(=N)N)\C=C\C1=CC=C([N+]([O-])=O)O1 XQCFHQBGMWUEMY-ZPUQHVIOSA-N 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000243 solution Substances 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
-
- 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
-
- 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/08—Controlling or monitoring pressure or flow of drilling fluid, e.g. automatic filling of boreholes, automatic control of bottom pressure
- E21B21/085—Underbalanced techniques, i.e. where borehole fluid pressure is below formation pressure
-
- 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
- E21B33/14—Methods or devices for cementing, for plugging holes, crevices or the like for cementing casings into boreholes
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Piles And Underground Anchors (AREA)
- Earth Drilling (AREA)
Abstract
The present invention relates to a kind of towed cementing methods of small borehole bushing window sidetracking well, belong to petroleum gas cementing technology field, technical solution is: intelligent short-circuit cycle pipe nipple is entered well with well cementation tubing string together；Former drilling fluid is injected, annular space is cleaned, is then implanted sequentially conventional very low-density drilling fluid (or clear water), insulating liquid, cement slurry and the former drilling fluid of specific quantity；Short-circuit cycle channel is opened, conventional very low-density drilling fluid (or clear water) is made to enter annular space, after conventional very low-density drilling fluid (or clear water) passes through completely, closes short-circuit cycle channel；Cement slurry is pressed into annular space using pressure difference, forms towed well cementation.The present invention has the advantages that by reducing annulus fluid density, the stagnation pressure reduction for being subject to shaft bottom prevents shaft bottom by pressure break, greatly improve the one-time success rate of small borehole bushing window sidetracking well well cementation, it ensure that cementing quality, reduce costs, avoid the pollution of oil-gas Layer.
Description
Technical field
The present invention relates to a kind of towed cementing methods of small borehole bushing window sidetracking well, belong to petroleum gas well cementation skill
Art field.
Background technique
In the drilling engineering of petroleum industry, it is mountable that cementing technology is that the barefoot interval cementing sealing that will be drilled is formed
The well of development equipment, cementing operation are that the cement slurry prepared is injected wellbore and casing after setting of casing in the wellbore being drilled
Annular space, Hou Ning form firm cement sheath.Small borehole bushing window sidetracking well is the cased wellbores that casing damaged well section or more is utilized
With original ground DP technology process again the offset well of oil reservoir of the drill change with a certain distance from casing damaged well section or adjustment well, it has
The features such as small investment, quick, wellbore service life suitable with the new well service life.Slim Hole Sidetracking Technology is China middle and later periods oil field for solving
Deformation well, accident well, deepened well and the important means for restoring production capacity on old block with Development volue.Due to small borehole bushing
Annular clearance is small when window sidetracking well is cemented the well, flow resistance is big, and one side replacement efficiency is poor, easy channelling, serious reduces matter of cementing the well
Amount, another aspect bottom pressure is larger, and excessive bottom pressure fractured well bottom often causes cement slurry to miss, and well cementation is caused to be lost
It loses, it is subsequent to take perforation is crowded to block up to remedy, well cementation cost is considerably increased, while cement slurry intrusion payzone can pollute oil gas
Layer reduces the rate of oil and gas recovery, so bottom pressure problems of too urgent need to resolve when small borehole bushing window sidetracking well is cemented the well.Mesh
Before, small borehole bushing window sidetracking well well cementation circulation problems are solved frequently with low-density Antileakage Cement Slurry technology in casing and cementing,
But low-density cement mortar price is high, substantially increases well cementation cost.Meanwhile the density of cement slurry is lower, the performance of Behavior of Hardened Cement Paste is got over
Difference reduces cementing quality, cannot reach ideal well cementation effect.Therefore, towed cementing method can be effective from technique
Solve the difficulties such as small borehole bushing window sidetracking well annular clearance is small, flow resistance is big, leakage, replacement efficiency difference caused by pump pressure height
Topic.
Summary of the invention
It is an object of the invention to overcome the deficiencies of existing technologies, a kind of small borehole bushing window sidetracking well traction is provided
Formula cementing method, with construction is simple, high reliablity is practical, can effectively solve the problem that small borehole bushing window sidetracking well
The problems such as leakage, of poor quality, at high cost, pollution oil-gas Layer in well cementing operation.
The purpose of the present invention is achieved through the following technical solutions: a kind of towed well cementation of small borehole bushing window sidetracking well
Method, it includes the following steps:
A, intelligent short-circuit cycle pipe nipple top connects drill string I, and lower part connects drill string II, enters well together with well cementation tubing string, and ensure
Intelligent short-circuit cycle pipe nipple is at the 50m-100m of extension hanger upper end；
B, former drilling fluid, cleaning well cementation tubing string and annular space are recycled, guarantees that well cementation tubing string inner passage and annulus access are unimpeded
It is without hindrance；
C, the conventional very low-density drilling fluid (or clear water) that specific quantity is injected into well cementation tubing string replaces former drilling fluid, pushes away
Dynamic intelligence decoding glue core I moves downward, and when intelligently decoding glue core I reaches the specific position of intelligent short-circuit cycle pipe nipple, intelligence is short
Road circulating sub receives decoding open signal I, and control short-circuit cycle channel is opened；
D, after the completion of the injection of conventional very low-density drilling fluid (or clear water), start successively to inject isolation into well cementation tubing string
Liquid and cement slurry push intelligence decoding glue core II to move downward；
E, after the completion of cement slurry injection, former drilling fluid is injected into well cementation tubing string；
F, when intelligence decoding glue core II reaches the specific position of intelligent short-circuit cycle pipe nipple, intelligent short-circuit cycle pipe nipple is received
Shutdown signal II is decoded, control short-circuit cycle channel is closed；
G, continue to inject former drilling fluid into well cementation tubing string, push cement slurry to enter annular space, until top cement plug bruising, stop
Pump, Hou Ning.
The liquid for replacing former drilling fluid is conventional very low-density drilling fluid (or clear water), is injected conventional special low
The amount of density drilling fluid (or clear water) can just be full of intelligent short-circuit cycle pipe nipple upper end annular space.
Well cementation tubing string inner passage and annular space are connected in the short-circuit cycle channel, make under intelligent short-circuit cycle pipe nipple (6a)
The channel short circuit at end, guarantees that conventional very low-density drilling fluid (or clear water) can smoothly enter into the ring of intelligent short-circuit cycle pipe nipple or more
It is empty.
The intelligent short-circuit cycle pipe nipple carries out open and close and acts twice: triggering for the first time by intelligence decoding glue core I, intelligence
The control system of energy short-circuit cycle pipe nipple receives identification decoding open signal I, control short-circuit cycle channel opening；Second by intelligence
The triggering of glue core II can be decoded, the control system of intelligent short-circuit cycle pipe nipple receives identification decoding shutdown signal II, and control short circuit follows
Ring channel is closed.
The center of the described intelligence decoding glue core I and intelligence decoding glue core II be it is hollow, pass through for liquid.
The short-circuit cycle channel is in close state when going into the well.
A kind of towed cementing method of small borehole bushing window sidetracking well utilizes the fluid column and ring in well cementation tubing string
Cement slurry is pressed into annular space based on self-balancing principle, forms towed well cementation by the pressure difference formed between empty fluid column.
Compared with prior art, the beneficial effects of the present invention are: being replaced using conventional very low-density drilling fluid (or clear water)
Former drilling fluid, due to gravity when well cementation, head of liquid is cemented the well in tubing string lower than head of liquid in well cementation tubing string in annular space
Pressure difference is automatically formed between fluid column and annular space fluid column, to reach pressure balance, cement slurry is formed towed automatically into annular space
Well cementation, the stagnation pressure reduction for being subject to shaft bottom effectively prevent shaft bottom by pressure break, guarantee cementing quality.The Small Well can effectively be overcome
The problems such as leakage, replacement efficiency difference caused by eye casing window sidetracking well well cementation annular clearance is small, flow resistance is big, pump pressure is high,
And then reaches and improve cementing quality, success rate of cementing the well and the target for reducing cost.
Detailed description of the invention
Fig. 1 is the status diagram for recycling former drilling fluid.
Fig. 2 is the status diagram for injecting conventional very low-density drilling fluid (or clear water).
Fig. 3 is the status diagram for injecting insulating liquid.
Fig. 4 is the status diagram for injecting cement slurry.
Fig. 5 is the status diagram of bottom plug rupture of membranes.
Fig. 6 is the status diagram of top cement plug bruising.
In figure: 1-top cement plug, 2-bottom plugs, 3-intelligence decoding glue cores II, 4-intelligence decoding glue cores I, 5-drill strings I,
6a-intelligence short-circuit cycle pipe nipple, 6b-short-circuit cycle channel, 7-drill strings II, 8-extension hangers, 9-casings, 10-rings
Sky, 11-barefoot intervals, 12-float collars, 13-guide shoes, 14-former drilling fluids, 15-routine very low-density drilling fluids (or it is clear
Water), 16-insulating liquids, 17-cement slurries.
Specific embodiment
In order to enable technical characteristic of the invention, purpose and beneficial effect to be more clearly understood, below with reference to embodiment
The present invention will be further described in detail.But described only a part of the embodiments of the present invention, does not include whole implementations
Example, should not be understood as the limitation to the scope of the present invention.
A kind of towed cementing method of small borehole bushing window sidetracking well, specific operating procedure is:
A, I 5 top of drill string connects cementing head, and I 5 lower part of drill string connects intelligent short-circuit cycle pipe nipple 6a, intelligent short-circuit cycle pipe nipple
The lower part 6a connects drill string II 7, and II 7 lower part of drill string connects extension hanger 8,8 lower part female connector tubing string of extension hanger, and casing string includes set
Pipe 9, float collar 12 and guide shoe 13, by casing string tripping in barefoot interval 11；
B, pitching builds the pressure, and packer realization is set；
C, continue to suppress, suppress logical ball seat, establish normal circulation；
D, former drilling fluid 14, cleaning well cementation tubing string and annular space 10 are recycled, guarantees that well cementation tubing string inner passage and annular space 10 are logical
Road is unblocked；
E, the conventional very low-density drilling fluid (or clear water) 15 that specific quantity is injected into well cementation tubing string pushes intelligence decoding glue
Core I 4 moves downward, and when intelligently decoding glue core I 4 reaches the specific position of intelligent short-circuit cycle pipe nipple 6a, intelligent short-circuit cycle is short
It saves 6a and receives decoding open signal I, control short-circuit cycle channel 6b is opened；
F, after the completion of conventional 15 injection of very low-density drilling fluid (or clear water), start to inject specific quantity into well cementation tubing string
Insulating liquid 16 and cement slurry 17 push intelligence decoding glue core II 3 to move downward；
G, when the specific position for intelligently decoding the intelligent short-circuit cycle pipe nipple 6a of the arrival of glue core II 3, intelligent short-circuit cycle pipe nipple
6a receives decoding shutdown signal II, and control short-circuit cycle channel 6b is closed；
H, it injects after the completion of cement slurry 17, former drilling fluid 14 is injected into well cementation tubing string and is recycled, 2 rupture of membranes of bottom plug,
Annular space 10 between 17 sleeve pipe 9 of cement slurry and barefoot interval 11, cement slurry 17 replace former drilling fluid 14；
I, until 1 bruising of top cement plug, geostatic pressure rises certain value quickly, which has replaced
Position, construction terminate；
J, termination of pumping, Hou Ning.
The great representativeness of above embodiments, have it is easy to operate, securely and reliably, can be realized stable well cementation effect, mention
High cementing quality, has saved well cementation cost, can preferably realize cementing method of the present invention.
Claims (7)
1. a kind of towed cementing method of small borehole bushing window sidetracking well, it is characterised in that it the following steps are included:
A: drill string I (5) top connects cementing head, and drill string I (5) lower part connects intelligent short-circuit cycle pipe nipple (6a), and intelligent short-circuit cycle is short
Section lower part (6a) connects drill string II (7), and drill string II (7) lower part connects extension hanger (8), extension hanger (8) lower part female connector tubing string,
Casing string includes casing (9), float collar (12) and guide shoe (13), by casing string tripping in barefoot interval (11), and guarantees intelligent short circuit
Circulating sub (6a) is at extension hanger (8) upper end 50m-100m；
B: former drilling fluid (14), cleaning well cementation tubing string and annular space (10) are recycled, guarantees well cementation tubing string inner passage and annular space (10)
Channel is unblocked；
C: injecting the conventional very low-density drilling fluid or clear water (15) of specific quantity into well cementation tubing string, pushes intelligence decoding glue core I
(4) it moves downward, when intelligently decoding glue core I (4) reaches the specific position of intelligent short-circuit cycle pipe nipple (6a), intelligent short-circuit cycle
Pipe nipple (6a) receives decoding open signal I, and control short-circuit cycle channel (6b) is opened；
D: after the completion of conventional very low-density drilling fluid or clear water (15) injection, start to be implanted sequentially specific quantity into well cementation tubing string
Insulating liquid (16) and cement slurry (17), push intelligence decoding glue core II (3) move downward；
E: when intelligently decoding glue core II (3) reaches the specific position of intelligent short-circuit cycle pipe nipple (6a), intelligent short-circuit cycle pipe nipple
(6a) receives decoding shutdown signal II, and control short-circuit cycle channel (6b) is closed；
F: after the completion of injection cement slurry (17), former drilling fluid (14) is injected into well cementation tubing string and is recycled, cement slurry is pushed
(17) enter annular space (10)；
G: after top cement plug (1) bruising, termination of pumping, Hou Ning.
2. a kind of towed cementing method of small borehole bushing window sidetracking well according to claim 1, it is characterised in that: use
In the liquid for replacing former drilling fluid (14) be conventional very low-density drilling fluid or clear water (15), the conventional very low-density drilling well of injection
The amount of liquid or clear water (15) can just be full of intelligent short-circuit cycle pipe nipple (6a) upper end annular space (10).
3. a kind of towed cementing method of small borehole bushing window sidetracking well according to claim 1, it is characterised in that: short
Road circulation canal (6b) connects well cementation tubing string inner passage and annular space (10), makes the channel of intelligent short-circuit cycle pipe nipple (6a) lower end
Short circuit.
4. a kind of towed cementing method of small borehole bushing window sidetracking well according to claim 1, it is characterised in that: Gu
Intelligent short-circuit cycle pipe nipple (6a) progress open and close act twice during well, for the first time by intelligently decoding glue core I (4) triggering, intelligence
The control system of energy short-circuit cycle pipe nipple (6a) receives identification decoding open signal I, control short-circuit cycle channel (6b) opening；The
Secondary to be triggered by intelligently decoding glue core II (3), the control system of intelligent short-circuit cycle pipe nipple (6a), which receives identification decoding and closes, to be believed
Number II, control short-circuit cycle channel (6b) is closed.
5. a kind of towed cementing method of small borehole bushing window sidetracking well according to claim 1, it is characterised in that: intelligence
It is hollow that the center of glue core I (4) and intelligence decoding glue core II (3), which can be decoded,.
6. a kind of towed cementing method of small borehole bushing window sidetracking well according to claim 1, it is characterised in that: short
Road circulation canal (6b) is in close state when going into the well.
7. a kind of towed cementing method of small borehole bushing window sidetracking well according to claim 1, it is characterised in that: benefit
With the pressure difference between the fluid column and annular space (10) fluid column in well cementation tubing string, cement slurry (17) are pressed by ring based on self-balancing principle
Empty (10), form towed well cementation.
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| CN201710845719.9A CN107489396B (en) | 2017-09-19 | 2017-09-19 | A kind of towed cementing method of small borehole bushing window sidetracking well |
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| CN201710845719.9A CN107489396B (en) | 2017-09-19 | 2017-09-19 | A kind of towed cementing method of small borehole bushing window sidetracking well |
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| CN107489396B true CN107489396B (en) | 2019-07-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Families Citing this family (4)
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| CN108979583B (en) * | 2018-07-12 | 2020-11-17 | 福州宇卓科技有限公司 | Sidetracking well layering and segmenting cementing device and using method |
| CN109403916A (en) * | 2018-12-05 | 2019-03-01 | 田振林 | A kind of thermally conductive well shaft fixing technology of geothermal well |
| CN114109309A (en) * | 2020-08-28 | 2022-03-01 | 中国石油化工股份有限公司 | Underground infinite-stage fracturing sliding sleeve |
| CN112943161B (en) * | 2021-01-14 | 2022-11-04 | 中国石油天然气股份有限公司 | Side drilling is exempted from to hang and can be lost hand well cementation well completion device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5301760A (en) * | 1992-09-10 | 1994-04-12 | Natural Reserves Group, Inc. | Completing horizontal drain holes from a vertical well |
| CN1621658A (en) * | 2003-11-28 | 2005-06-01 | 大港油田集团有限责任公司 | Well cementing technology by center tube replacing elutriation method |
| CN1632278A (en) * | 2003-12-24 | 2005-06-29 | 大港油田集团有限责任公司 | Big tail pipe side drilling well cementing technology |
| CN103362473A (en) * | 2012-10-24 | 2013-10-23 | 中国石油化工股份有限公司 | Graded variable density well cementation technology |
| CN104963653A (en) * | 2015-07-24 | 2015-10-07 | 中石化华东石油工程有限公司 | Cementing technology for 5.5-cun sleeve windowed side drilled slim hole |
| CN106223917A (en) * | 2016-08-01 | 2016-12-14 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | A kind of side tracked slim hole layered fracturing pipe string and method |
-
2017
- 2017-09-19 CN CN201710845719.9A patent/CN107489396B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5301760A (en) * | 1992-09-10 | 1994-04-12 | Natural Reserves Group, Inc. | Completing horizontal drain holes from a vertical well |
| US5301760C1 (en) * | 1992-09-10 | 2002-06-11 | Natural Reserve Group Inc | Completing horizontal drain holes from a vertical well |
| CN1621658A (en) * | 2003-11-28 | 2005-06-01 | 大港油田集团有限责任公司 | Well cementing technology by center tube replacing elutriation method |
| CN1632278A (en) * | 2003-12-24 | 2005-06-29 | 大港油田集团有限责任公司 | Big tail pipe side drilling well cementing technology |
| CN103362473A (en) * | 2012-10-24 | 2013-10-23 | 中国石油化工股份有限公司 | Graded variable density well cementation technology |
| CN104963653A (en) * | 2015-07-24 | 2015-10-07 | 中石化华东石油工程有限公司 | Cementing technology for 5.5-cun sleeve windowed side drilled slim hole |
| CN106223917A (en) * | 2016-08-01 | 2016-12-14 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | A kind of side tracked slim hole layered fracturing pipe string and method |
Non-Patent Citations (3)
| Title |
|---|
| 国内外小井眼固井技术研究现状;张凯等;《钻采工艺》;20150331;第38卷(第2期);29-30 |
| 小井眼开窗侧钻井固井工艺技术;蒋海涛等;《石油钻采工艺》;20030430;第25卷(第2期);50-53 |
| 开窗侧钻小井眼、小间隙井;张文泽等;《化学工程师》;20161231(第9期);23-26 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| CN107489396A (en) | 2017-12-19 |
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