CN101403281B - Tail pipe well drilling and well completion technique - Google Patents
Tail pipe well drilling and well completion technique Download PDFInfo
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- CN101403281B CN101403281B CN2008101375803A CN200810137580A CN101403281B CN 101403281 B CN101403281 B CN 101403281B CN 2008101375803 A CN2008101375803 A CN 2008101375803A CN 200810137580 A CN200810137580 A CN 200810137580A CN 101403281 B CN101403281 B CN 101403281B
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Abstract
The invention discloses a liner drilling and well completion process, which mainly solves the problems of difficult guarantees of cementing quality to the liner drilling process, easy occurrence of serious drilling troubles, complex processes, a plurality of related tools, poor reliability and short maximum drilling length. The process is characterized in that: after the well completion of an intermediate casing: (1) a liner drilling string is connected; (2) the liner drilling is carried out; (3) the drilling is finished; (4) then a hanging liner and a running tool are disentangled from a liner hanger; (5) a well completion string is connected; (6) the liner is rotated to carry out well cementation; (7) the liner is set; and (8) a drill rod and the running tool are taken out. The liner drilling and well completion process is characterized by good well cementation quality, safety and reliability, simple process, fewer related tools and longest maximum drilling length.
Description
Technical field:
The present invention relates to tail pipe well drilling technology, especially tail pipe well drilling and well-completing process in the oil drilling field.
Background technology:
Casing Drilling Technique is the revolutionary new technology in drilling well field in the world wide, is with a wide range of applications.Casing drilling has changed the operating type of conventional drilling; the broken rock in down-hole is crept into casing job synchronous, have the incorporate technical characterictic of drilling well and completion, both can reduce engineering cost; can reduce the generation of down-hole complex accident again, and help advantages such as reservoir protection.Tail pipe well drilling technology is a kind of form of casing drilling technology.Tail pipe well drilling belongs to a type of casing drilling, therefore has the advantage that reduces drilling cost, reduces down-hole accident equally.Especially to there being the deep-well of complicated abnormal conditions such as cave-in, use the tail pipe well drilling technology significant.It is perfect that tail pipe well drilling technology has experienced the development of two more than ten years abroad, obtained successful application.At present, the external existence with Bake-Hughes, Hughes-Clayton Christensen, A Moke-winner moral and four kinds of different tail pipe well drilling systems such as disposable, wherein Bake-Hughes's tail pipe well drilling system applies is maximum, and its overall performance awaits to improve.External tail pipe well drilling system architecture more complicated, its arbitrary link goes wrong, and all can cause engineering accident, and aspects such as the drilling depth ability of its reliability and deep-well can not satisfy field requirement fully.Drilling liner cementing technology can not be taken into account on cementing quality and engineering safety fully.Two kinds of technologies of the general employing of existing tail pipe well drilling technology: the one, sit earlier and hang tail pipe, do not cementing the well under the rotary tail condition then.The 2nd, under the rotary tail condition, cement the well earlier, and then sit and hang tail pipe.The former shortcoming is that cementing quality is difficult to guarantee.If the latter's shortcoming is well cementation back sits to hang and conciliates problem, the serious down-hole accident that just causes running tool to pull out not coming out.In sum, existing tail pipe well drilling technology mainly exists cementing quality to be difficult to guarantee, easily causes serious down-hole accident, and complex process, it is many to relate to instrument, poor reliability, the progress chi of deep drilling is 60 meters, does not satisfy the drilling well demand, the development of restriction tail pipe well drilling technology.
Summary of the invention:
Be difficult to guarantee in order to overcome existing tail pipe well drilling technology cementing quality, easily cause serious down-hole accident, complex process, it is many to relate to instrument, poor reliability, the deficiency that drilling well length is short the invention provides a kind of tail pipe well drilling and well-completing process, and it is good that this tail pipe well drilling and well-completing process have a cementing quality, safe and reliable, technology is simple, and it is few to relate to instrument, the characteristics that drilling well length is long.
Technical scheme of the present invention is: this tail pipe well drilling and well-completing process comprise the protective casing completion, after the protective casing well cementation;
(1), the tail pipe drill string connects; Include kelly bar, drilling rod, the rotary liner hanger that can carry out drilling and well completion respectively, tail pipe, flower basket type plug seat, float collar, drill bit;
(2), tail pipe well drilling; Carry out drilling well with gas as circulatory mediator;
(3), after the finishing drilling; Circulating fluid;
(4), sitting extension tail pipe and running tool and extension hanger frees; By the ball of in drill string, devoting oneself to work, circulating fluid boosts to 5 MPas, the rotary liner hanger slips is sat and is suspended on the upper level sleeve pipe, drilling fluid continues to boost to 8 MPas, running tool and extension hanger are freed and are kept sealing, continue to boost to 15 MPas, the well cementation passage is opened, and can carry out cementing;
(5), completion tubular column connects; Cementing head links to each other with rotating mechanism, and rotating mechanism links to each other with the tail pipe drill string;
(6), rotary tail well cementation; Rotate rotating disk, cement injection by drop into solid plug in tubing string, for drilling fluid, boosts to 15 MPas after the bruising, and solid plug and hollow plug are compound and keep sealing, and be together descending, the compound and maintenance sealing with the plug seat;
(7), set extension hanger; On submit into the instrument certain altitude, press down drill string, the rotary liner hanger sealing mechanism is set in the upper level sleeve pipe;
(8), trip out drilling rod and running tool.
Tail pipe well drilling in the such scheme carries out drilling well with drilling fluid as circulatory mediator.
The beneficial effect that the present invention has is: this tail pipe well drilling and well-completing process are owing to adopted above-mentioned technology, obtain following beneficial effect, at first be that this technology not only can participate in drilling well, can also be rotated well cementation, and drilling well is reliable, handling safety, and cementing quality is good, the situation of avoiding running tool to extract takes place, and satisfies field requirement.Next is that drilling depth is long, increases to about 300 meters by existing 60 meters.Be that technology is simple at last, it is few to relate to instrument, the reliability height, and cementing quality is good, reduces engineering cost, can reduce the generation of down-hole complex accident again, and help reservoir protection.Help applying.
Description of drawings:
Accompanying drawing 1 is a well drilling drill string structural representation of the present invention;
Accompanying drawing 2 is completion tubular column structural representations of the present invention;
Accompanying drawing 3 is rotary liner hanger structural representations that the present invention can carry out drilling and well completion respectively.
1-ball seat among the figure, 2-inner core, 3-central tube, 4-fixing pin, 5-hangs the ball lining, and 6-hangs ball, 7-liquid pass hole, 8-sliding sleeve, 9-slide-bar, 10-are sat and are hung spiral pin, 11-slips, the 12-cone, 13-sliding pin, 14-main body, 15-ball seat pin, the 16-core barrel, 17-connects pin, the 18-expansion-head, 19-backing pin, 20-expansion tube, the 21-upper saddle, 22-packing element, 23-kelly bar, the 24-drilling rod, 25-can carry out the rotary liner hanger of drilling and well completion, 26-tail pipe respectively, 27-flower basket type plug seat, 28-float collar, 29-drill bit, 30-upper level sleeve pipe, 31-cementing head, 32-rotating mechanism.
The specific embodiment:
Below in conjunction with accompanying drawing will the invention will be further described:
In conjunction with Fig. 2, shown in Figure 3, this tail pipe well drilling and well-completing process are after the protective casing well cementation by Fig. 1;
(1), the tail pipe drill string connects.The main effect of this operation is to form the tail pipe drill string.Include kelly bar 23, drilling rod 24, the rotary liner hanger 25 that can carry out drilling and well completion respectively, tail pipe 26, flower basket type plug seat 27, float collar 28, drill bit 29, they are successively by being threaded, drive kelly bar 23 drilling wells and well cementation by rotating disk, being connected and freeing of the rotary liner hanger 25 control drilling rods 24 by can carrying out drilling and well completion respectively and tail pipe 26.
(2), tail pipe well drilling.The main effect of this operation is to utilize the tail pipe drill string steadily to creep into.Adopt and existingly commonly to creep into used gas and carry out drilling well, also adopt and existingly commonly creep into used drilling fluid and carry out drilling well as circulatory mediator as circulatory mediator.When adopting gas to carry out drilling well, can improve drilling depth length, increase to about 300 meters by existing 60 meters as circulatory mediator.
(3), after the finishing drilling.Circulating fluid.The main effect of this operation is the cleaning well, and is ready for the extension hanger construction simultaneously.
(4), sitting extension tail pipe and running tool and extension hanger frees.The main effect of this operation is that tail pipe is sat extension and drill string and tail pipe and freed.By the ball of in drill string, devoting oneself to work, the work ball is put into the upper end of the ball seat 1 of this rotary liner hanger 25 that can carry out drilling and well completion respectively from drill string, the sphere of work ball and ball seat 1 upper end produces sealing, when pressure reaches 5 MPas, the fixing pin 4 that inner core 2 is fixedlyed connected with central tube 3 is cut off, inner core 2 is descending, inner core 2 is also spacing to hanging ball 6 by hanging ball lining 5, the sealing ring of inner core 2 upper ends lost efficacy, drilling fluid enters in the sliding sleeve 8 upper end boss from liquid pass hole 7, the seat that promotion sliding sleeve 8 is cut off between sliding sleeve 8 and the slide-bar 9 is hung spiral pin 10, sliding sleeve 8 is up, and it is up along cone 12 lower end male cone (strobilus masculinus)s to promote slips 11, outwards expands at the effect lower slips 11 of cone 12 conical surfaces, slips 11 outer anchor teeth are stuck in the upper level sleeve pipe, and tail pipe is realized sitting and is hung in the upper level sleeve pipe.Drilling fluid continues to boost to 8 MPas, the sliding pin 13 that inner core 2 is connected with central tube 3 is cut off, inner core 2 no longer carries out spacing to hanging ball 6, hanging ball 6 inwardly shifts out, central tube 3 is freed with the suspension of main body 14, and at this moment main body 14 can be rotated with central tube 3 synchronously by spline, but central tube 3 no longer carries the load of main body 14 and its underpart, realize running tool and sit freeing and keeping sealing of on-hook structure, just drill string and tail pipe are freed.Continue to boost to 15 MPas, ball seat 1 is cut off with the ball seat pin 15 that is connected between the inner core 2, and work ball and ball seat 1 together come off, and the well cementation passage is opened, and can carry out cementing.Hang tail pipe thereby solve to sit earlier, cement the well under the rotary tail condition then, improved cementing quality, avoided running tool to pull out to come out serious down-hole accident phenomenon and taken place.
(5), completion tubular column connects.The main effect of this operation is to finish the completion tubular column combination at the tail pipe drill string.Link to each other with rotating mechanism 32 by cementing head 31, rotating mechanism 32 is connected to form completion tubular column with the tail pipe drill string.
(6), rotary tail well cementation.The main effect of this operation is to drive the completion tubular column rotation by rotating disk to finish well cementation.By completion tubular column cement injection in tail pipe, driving completion tubular column by rotating disk simultaneously rotates, after cementing finishes, by in completion tubular column, dropping into solid plug, solid plug sits on the upper end of the inner core 2 of this rotary liner hanger 25 that can carry out drilling and well completion respectively from completion tubular column, solid plug and inner core 2 upper ends produce sealing, for drilling fluid, boost to 15 MPas after the bruising, make core barrel 16 and central tube 3 be fixedly coupled pin 17 and cut off, inner core 2 and core barrel 16 together come off, solid plug and hollow plug are compound and keep sealing, and be together descending, the compound and maintenance sealing with the plug seat, on carry completion tubular column, realize drill string and the thorough disengagement of sending into mechanism.
(7), set extension hanger.The main effect of this operation is that tail pipe is sealed in the upper level sleeve pipe.In the up process of completion tubular column, central tube 3 is up, and expansion-head 18 is no longer spacing to backing pin 19, backing pin 19 ejects, and backing pin 19 cards are sitting in expansion-head 18 upper ends, press down completion tubular column, in the process that completion tubular column falls, central tube 3 falls and also and then falls, and backing pin 19 is realized sealing firmly by the type conical bench distending expansion tube 20 of expansion-head 18 in the process that central tube 3 falls, simultaneously, by expansion tube 20 and packing element upper saddle 21 extruding packing elements 22, realize soft seal more again, finally reach double-sealing.The rotary liner hanger sealing mechanism is set in the upper level sleeve pipe, and tail pipe sets operation and finishes.
(8), trip out completion tubular column and running tool.The main effect of this operation is to trip out completion tubular column and send into mechanism.Finally finish the construction of tail pipe well drilling and completion.
In sum, owing to adopted above-mentioned technology to obtain following beneficial effect, at first, because of well drilling drill string and completion tubular column basic identical, just finish drilling well and well shaft fixing technology with an endowel substantially, this technology not only can participate in drilling well thus, can also be rotated well cementation, and drilling well is reliable, handling safety, cementing quality is good, and the situation of avoiding running tool to extract takes place, and satisfies field requirement.Secondly, existingly commonly creep into used gas and carry out drilling well because of having adopted again, thereby increased drill footage length, increase to about 300 meters by existing 60 meters as circulatory mediator.At last; because of adopting the rotary liner hanger 25 that can carry out drilling and well completion respectively on tail pipe drill string and the completion tubular column; make technology simple; it is few to relate to instrument, and the reliability height has improved cementing quality; reduce engineering cost; can reduce the generation of down-hole complex accident again, and help reservoir protection, for major contribution has been made in the development of oil drilling.This tail pipe well drilling and well-completing process have outstanding substantive distinguishing features and obvious improvement thus.
Claims (2)
1. tail pipe well drilling and well-completing process is characterized in that: after the protective casing well cementation;
(1), the tail pipe drill string connects: include kelly bar (23), drilling rod (24), the rotary liner hanger (25) that can carry out drilling and well completion respectively, tail pipe (26), flower basket type plug seat (27), float collar (28), drill bit (29); They drive kelly bar (23) drilling well and well cementation successively by being threaded by rotating disk, being connected and freeing of rotary liner hanger (25) the control drilling rod (24) by can carrying out drilling and well completion respectively and tail pipe (26);
(2), tail pipe well drilling: carry out drilling well as circulatory mediator with gas:
(3), after the finishing drilling, circulating fluid;
(4), sitting extension tail pipe and running tool and described rotary liner hanger (25) frees: by the ball of devoting oneself to work in drill string, the work ball is put into ball seat (1) upper end of described rotary liner hanger (25) from drill string, the sphere of work ball and ball seat (1) upper end produces sealing, when pressure reaches 5 MPas, the fixing pin (4) that inner core (2) is fixedlyed connected with central tube (3) is cut off, inner core (2) is descending, inner core (2) is also spacing to hanging ball (6) by hanging ball lining (5), the sealing ring of inner core (2) upper end lost efficacy, drilling fluid enters in the boss of sliding sleeve (8) upper end from liquid pass hole (7), the seat that promotion sliding sleeve (8) is cut off between sliding sleeve (8) and the slide-bar (9) is hung spiral pin (10), sliding sleeve (8) is up, it is up along cone (12) lower end male cone (strobilus masculinus) to promote slips (11), effect lower slips (11) at cone (12) conical surface outwards expands, the outer anchor tooth of slips (11) is stuck in the upper level sleeve pipe, and tail pipe is realized sitting and is hung in the upper level sleeve pipe; Drilling fluid continues to boost to 8 MPas, the sliding pin (13) that inner core (2) is connected with central tube (3) is cut off, inner core (2) no longer carries out spacing to hanging ball (6), hanging ball (6) inwardly shifts out, central tube (3) is freed with the suspension of main body (14), main body (14) by spline can with central tube (3) rotation synchronously, central tube (3) no longer carries the load of main body (14) and its underpart, realizes running tool and sits freeing and keeping sealing of on-hook structure; Continue to boost to 15 MPas, ball seat (1) is cut off with the ball seat pin (15) that is connected between the inner core (2), and work ball and ball seat (1) together come off, and the well cementation passage is opened, and can carry out cementing;
(5), completion tubular column connects: cementing head (31) links to each other with rotating mechanism (32), and rotating mechanism (32) links to each other with the tail pipe drill string;
(6), rotary tail well cementation: by completion tubular column cementing in tail pipe, driving completion tubular column by rotating disk simultaneously rotates, after cementing finishes, by in completion tubular column, dropping into solid plug, solid plug sits on the upper end of the inner core (2) of described rotary liner hanger (25) from completion tubular column, solid plug and inner core (2) upper end produces sealing, for drilling fluid, boost to 15 MPas after the bruising, making core barrel (16) and central tube (3) be fixedly coupled pin (17) cuts off, inner core (2) and core barrel (16) together come off, solid plug and hollow plug are compound and keep sealing, and be together descending, the compound and maintenance sealing with flower basket type plug seat (27), on carry completion tubular column, realize drill string and the thorough disengagement of sending into mechanism;
(7), set extension hanger: in the up process of completion tubular column, central tube (3) is up, expansion-head (18) is no longer spacing to backing pin (19), backing pin (19) ejects, backing pin (19) card is sitting in expansion-head (18) upper end, press down completion tubular column, in the process that completion tubular column falls, central tube (3) also and then falls, backing pin (19) is by the type conical bench distending expansion tube (20) of expansion-head (18) in the process that central tube (3) falls, realize hard sealing, simultaneously, again by expansion tube (20) and packing element upper saddle (21) extruding packing element (22), realize soft seal again, finally reach double-sealing, the sealing mechanism of described rotary liner hanger (25) is set in the upper level sleeve pipe, tail pipe sets operation and finishes;
(8), trip out completion tubular column and running tool.
2. tail pipe well drilling according to claim 1 and well-completing process is characterized in that:
Tail pipe well drilling carries out drilling well with drilling fluid as circulatory mediator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101375803A CN101403281B (en) | 2008-11-21 | 2008-11-21 | Tail pipe well drilling and well completion technique |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101375803A CN101403281B (en) | 2008-11-21 | 2008-11-21 | Tail pipe well drilling and well completion technique |
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| CN101403281A CN101403281A (en) | 2009-04-08 |
| CN101403281B true CN101403281B (en) | 2011-06-08 |
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| CN2008101375803A Active CN101403281B (en) | 2008-11-21 | 2008-11-21 | Tail pipe well drilling and well completion technique |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106567676B (en) * | 2015-10-12 | 2018-09-11 | 中石化石油工程技术服务有限公司 | Buckling type tail drillng operation device and its operational method |
| CN110331932B (en) * | 2019-07-11 | 2020-11-24 | 中煤科工集团重庆研究院有限公司 | Coal bed gas tail pipe drilling method suitable for coal mine goaf/through goaf |
| CN111075349B (en) * | 2019-12-20 | 2021-08-27 | 山西晋城无烟煤矿业集团有限责任公司 | Construction method of ground mining empty well suspension type well body structure |
| CN114718520B (en) * | 2022-03-18 | 2024-03-29 | 中国石油大学(华东) | Method and device for drilling and extracting marine natural gas hydrate |
Citations (3)
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|---|---|---|---|---|
| US6009943A (en) * | 1996-03-01 | 2000-01-04 | Smith International, Inc. | Liner assembly and method |
| CN2748629Y (en) * | 2004-09-24 | 2005-12-28 | 辽河石油勘探局 | Liner hanger for drilling completion operation |
| CN200943455Y (en) * | 2006-04-20 | 2007-09-05 | 中国石化集团胜利石油管理局钻井工艺研究院 | Expandable tail tube suspension device for petroleum drilling well |
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2008
- 2008-11-21 CN CN2008101375803A patent/CN101403281B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6009943A (en) * | 1996-03-01 | 2000-01-04 | Smith International, Inc. | Liner assembly and method |
| CN2748629Y (en) * | 2004-09-24 | 2005-12-28 | 辽河石油勘探局 | Liner hanger for drilling completion operation |
| CN200943455Y (en) * | 2006-04-20 | 2007-09-05 | 中国石化集团胜利石油管理局钻井工艺研究院 | Expandable tail tube suspension device for petroleum drilling well |
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| Title |
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| 张庆豫等.旋转尾管固井工艺技术现状.《钻采工艺》.2007,第30卷(第4期),35-37. * |
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Address after: 163453 Heilongjiang Province, Daqing City Ranghulu District Central Plains Road No. 99 Patentee after: DAQING PETROLEUM ADMINISTRATION Co.,Ltd. Address before: 163453 Heilongjiang Province, Daqing City Ranghulu District No. 263 South Central Avenue Patentee before: DA QING PETROLEUM ADMINISTRATION BUREAU |
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Effective date of registration: 20220107 Address after: 163453 Heilongjiang Province, Daqing City Ranghulu District Central Plains Road No. 99 Patentee after: DAQING PETROLEUM ADMINISTRATION Co.,Ltd. Patentee after: CHINA NATIONAL PETROLEUM Corp. Address before: 163453 Heilongjiang Province, Daqing City Ranghulu District Central Plains Road No. 99 Patentee before: DAQING PETROLEUM ADMINISTRATION Co.,Ltd. |