CN103206191A - Integrated technique of liner cementing and channeling in heavy oil production - Google Patents
Integrated technique of liner cementing and channeling in heavy oil production Download PDFInfo
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- CN103206191A CN103206191A CN2013101336458A CN201310133645A CN103206191A CN 103206191 A CN103206191 A CN 103206191A CN 2013101336458 A CN2013101336458 A CN 2013101336458A CN 201310133645 A CN201310133645 A CN 201310133645A CN 103206191 A CN103206191 A CN 103206191A
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- liner cementing
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Abstract
The invention relates to the technical field of oil well workover, in particular to an integrated technique of liner cementing and channeling in heavy oil production. The technique includes the steps of firstly, estimating the size of a channel according the stratum structure, lithology, production data and section characteristics, and calculating the amount of required cement paste for sealing; secondly, calculating the amount of required cement paste for liner cementing according the size of a liner; and thirdly, adding the amounts of required cement paste in the step 1 and step 2 to obtain the amount of required cement paste in the technique. Water channeling of the stratum around a liner cementing section is sealed, an original extra-casing cement sheath is reinforced, fluid transfer and casing damage are prevented, and the yield of crude oil is increased. The defect that water channeling of the stratum around the liner cementing section and damage of the original extra-casing cement sheath cannot be solved by the existing liner cementing technique is overcome.
Description
Technical field:
The present invention relates to a kind of petroleum well workover operation technique field, particularly a kind of viscous crude drilling liner cementing squeezes and scurries a body technique.
Background technology:
The exploitation of oil be unable to do without workover treatment, and drilling liner cementing is technology commonly used in the workover treatment.
In the thickened oil recovery process, owing to oil reservoir position sleeve pipe damages or well recovery needs carry out sidetracking or reinforces sleeve pipe, following drilling liner cementing completion.After exploitation a period of time, often there is the phenomenon of water breakthrough in the well of drilling liner cementing completion under the viscous crude, makes the moisture rising of the crude output underproduction.The reason of water breakthrough: because the thickened oil recovery inclement condition, as: formation skeleton is loose, stratum deficit, range of temperature greatly, easily shake out, the permeability extreme difference is bigger etc. causes cement sheath damage water breakthrough and interlayer water breakthrough sleeve pipe outside.
Drilling liner cementing is exactly the outer annular space oil well cement paste filling at tail pipe, and with tail pipe and formation rock, or tail pipe and former casing bonding became a firm integral body, reaches the purpose of control well inner fluid after cement paste solidified.Situation near the stratum water breakthrough drilling liner cementing section or the outer stratum water breakthrough of former casing or the outer cement sheath damage of former casing adopts the drilling liner cementing technology not solve.
Summary of the invention:
The technical problem to be solved in the present invention provides the crowded body technique of scurrying of a kind of viscous crude drilling liner cementing, and this technology has realized near the stratum water breakthrough of shutoff drilling liner cementing section and added the outer cement sheath of Guyuan casing, prevented that fluid migration and sleeve pipe from damaging, and increases crude output.Overcome the deficiency that existing drilling liner cementing technology can not solve near the stratum water breakthrough of drilling liner cementing section and the outer cement sheath damage of former casing.
The technical solution used in the present invention is: a kind of viscous crude drilling liner cementing squeezes and scurries a body technique, and this technical step is as follows:
One, according to earth formation, lithology, oil recovery data and block characteristics, the size of groove is scurried in estimation, calculates envelope and scurries required cement paste consumption;
Two, calculate the solid required cement paste consumption of tail pipe according to the tail pipe size;
Three, the summation of step 1 and two required cement paste consumptions is exactly the required cement slurry volume of present technique;
Four, construction sequence:
(1) well is prepared: the well of tail pipe is repaiied cover or bore hole is crept into or drifting to being used for down;
(2) tail pipe under: following float collar, float shoe, tail pipe, hollow plug, suspension organ pipe string;
(3) circulation well cleanup: put circulation workover fluid in back under the tail pipe in place more than one week;
(4) hanger is sat and is hung: hanger is sat extension, drive central tube;
(5) replace into oil well cement paste: replace into oil well cement paste, throw little plug, pump into displacement fluid;
(6) bruising: come downwards to the spoiler bruising after little plug and hollow plug are compound;
(7) upper lifting pipe post: the up and hanger of central tube is thrown off, the upper lifting pipe post to the precalculated position namely apart from hanger 100-300m;
(8) circulation well cleanup: circulation well cleanup washes out superfluous water mud in the well;
(9) close half envelope blowout preventer, the cement paste more than the hanger is clamp-oned scurried groove location, band is pressed closing well Hou Ning;
(10) bore plug: following bit drills cement plug;
(11) drifting: select jack rabbit to carry out drifting to design attitude, circulation well cleanup is more than one week;
(12) test: detect solid tail pipe quality, completion.
The invention has the beneficial effects as follows: the present invention owing to adopted estimates the mode that groove is scurried in the required cement paste consumption of groove and shutoff of scurrying in advance, thereby have near the stratum water breakthrough of shutoff drilling liner cementing section and add the Guyuan casing function of cement sheath outward, prevent that fluid migration and sleeve pipe from damaging, and increases crude output.
Description of drawings:
The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.
Fig. 1 is the effect schematic diagram after the employing shutoff water breakthrough of the present invention.
The specific embodiment:
As shown in Figure 1, a kind of viscous crude drilling liner cementing squeezes and scurries a body technique, and this technical step is as follows:
One, according to earth formation, lithology, oil recovery data and block characteristics, the size of groove is scurried in estimation, calculates envelope and scurries required cement paste consumption;
Two, calculate the solid required cement paste consumption of tail pipe according to the tail pipe size;
Three, the summation of step 1 and two required cement paste consumptions is exactly the required cement slurry volume of present technique;
Four, construction sequence:
(1) well is prepared: the well of tail pipe is repaiied cover or bore hole is crept into or drifting to being used for down;
(2) tail pipe under: following float collar, float shoe, tail pipe, hollow plug, suspension organ pipe string;
(3) circulation well cleanup: put circulation workover fluid in back under the tail pipe in place more than one week;
(4) hanger is sat and is hung: hanger is sat extension, drive central tube;
(5) replace into oil well cement paste: replace into oil well cement paste, throw little plug, pump into displacement fluid;
(6) bruising: come downwards to the spoiler bruising after little plug and hollow plug are compound;
(7) upper lifting pipe post: the up and hanger of central tube is thrown off, the upper lifting pipe post to the precalculated position namely apart from hanger 100-300m;
(8) circulation well cleanup: circulation well cleanup washes out superfluous water mud in the well;
(9) close half envelope blowout preventer, the cement paste more than the hanger is clamp-oned scurried groove location, band is pressed closing well Hou Ning;
(10) bore plug: following bit drills cement plug;
(11) drifting: select jack rabbit to carry out drifting to design attitude, circulation well cleanup is more than one week;
(12) test: detect solid tail pipe quality, completion.
Be understandable that, more than about specific descriptions of the present invention, only for the present invention being described and being not to be subject to the described technical scheme of the embodiment of the invention, those of ordinary skill in the art is to be understood that, still can make amendment or be equal to replacement the present invention, to reach identical technique effect; Use needs as long as satisfy, all within protection scope of the present invention.
Claims (1)
1. a viscous crude drilling liner cementing squeezes and scurries a body technique, and it is characterized in that: this technical step is as follows:
One, according to earth formation, lithology, oil recovery data and block characteristics, the size of groove is scurried in estimation, calculates envelope and scurries required cement paste consumption;
Two, calculate the solid required cement paste consumption of tail pipe according to the tail pipe size;
Three, the summation of step 1 and two required cement paste consumptions is exactly the required cement slurry volume of present technique;
Four, construction sequence:
(1) well is prepared: the well of tail pipe is repaiied cover or bore hole is crept into or drifting to being used for down;
(2) tail pipe under: following float collar, float shoe, tail pipe, hollow plug, suspension organ pipe string;
(3) circulation well cleanup: put circulation workover fluid in back under the tail pipe in place more than one week;
(4) hanger is sat and is hung: hanger is sat extension, drive central tube;
(5) replace into oil well cement paste: replace into oil well cement paste, throw little plug, pump into displacement fluid;
(6) bruising: come downwards to the spoiler bruising after little plug and hollow plug are compound;
(7) upper lifting pipe post: the up and hanger of central tube is thrown off, the upper lifting pipe post to the precalculated position namely apart from hanger 100-300m;
(8) circulation well cleanup: circulation well cleanup washes out superfluous water mud in the well;
(9) close half envelope blowout preventer, the cement paste more than the hanger is clamp-oned scurried groove location, band is pressed closing well Hou Ning;
(10) bore plug: following bit drills cement plug;
(11) drifting: select jack rabbit to carry out drifting to design attitude, circulation well cleanup is more than one week;
(12) test: detect solid tail pipe quality, completion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310133645.8A CN103206191B (en) | 2013-04-17 | 2013-04-17 | Viscous crude drilling liner cementing squeezes and alters integrated method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310133645.8A CN103206191B (en) | 2013-04-17 | 2013-04-17 | Viscous crude drilling liner cementing squeezes and alters integrated method |
Publications (2)
| Publication Number | Publication Date |
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| CN103206191A true CN103206191A (en) | 2013-07-17 |
| CN103206191B CN103206191B (en) | 2015-09-30 |
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| CN201310133645.8A Active CN103206191B (en) | 2013-04-17 | 2013-04-17 | Viscous crude drilling liner cementing squeezes and alters integrated method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106948788A (en) * | 2017-03-21 | 2017-07-14 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | A kind of method for implementing secondary well cementation in net horizontal section |
| CN114109298A (en) * | 2020-08-26 | 2022-03-01 | 中国石油天然气股份有限公司 | Method for cementing lost-circulation zone well section |
| CN114320217A (en) * | 2020-09-30 | 2022-04-12 | 中国石油天然气股份有限公司 | Secondary well cementation and water plugging method for pipe outside channeling well |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5566757A (en) * | 1995-03-23 | 1996-10-22 | Halliburton Company | Method and apparatus for setting sidetrack plugs in open or cased well bores |
| US6772835B2 (en) * | 2002-08-29 | 2004-08-10 | Halliburton Energy Services, Inc. | Apparatus and method for disconnecting a tail pipe and maintaining fluid inside a workstring |
| 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 |
-
2013
- 2013-04-17 CN CN201310133645.8A patent/CN103206191B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5566757A (en) * | 1995-03-23 | 1996-10-22 | Halliburton Company | Method and apparatus for setting sidetrack plugs in open or cased well bores |
| EP0733775B1 (en) * | 1995-03-23 | 2004-05-19 | Halliburton Company | Method and apparatus for setting a sidetrack plug in a well bore |
| US6772835B2 (en) * | 2002-08-29 | 2004-08-10 | Halliburton Energy Services, Inc. | Apparatus and method for disconnecting a tail pipe and maintaining fluid inside a workstring |
| 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 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106948788A (en) * | 2017-03-21 | 2017-07-14 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | A kind of method for implementing secondary well cementation in net horizontal section |
| CN106948788B (en) * | 2017-03-21 | 2020-03-17 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Method for implementing secondary well cementation in horizontal well section |
| CN114109298A (en) * | 2020-08-26 | 2022-03-01 | 中国石油天然气股份有限公司 | Method for cementing lost-circulation zone well section |
| CN114320217A (en) * | 2020-09-30 | 2022-04-12 | 中国石油天然气股份有限公司 | Secondary well cementation and water plugging method for pipe outside channeling well |
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| Publication number | Publication date |
|---|---|
| CN103206191B (en) | 2015-09-30 |
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Effective date of registration: 20151209 Address after: Tian Dawa County 124114 Liaoning city of Panjin Province Town Industrial Park Patentee after: Liaoning Kun Cheng Industrial Co., Ltd. Address before: Tian Dawa County 124114 Liaoning city of Panjin Province Town Industrial Park Patentee before: Panjin Liaohe Oilfield Kuncheng Industry Co., Ltd. |