CN101718190A - Completed well body structure with temporary plugging function screen pipe and well completion method for suspending screen pipe at tail pipe - Google Patents
Completed well body structure with temporary plugging function screen pipe and well completion method for suspending screen pipe at tail pipe Download PDFInfo
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- CN101718190A CN101718190A CN200910241704A CN200910241704A CN101718190A CN 101718190 A CN101718190 A CN 101718190A CN 200910241704 A CN200910241704 A CN 200910241704A CN 200910241704 A CN200910241704 A CN 200910241704A CN 101718190 A CN101718190 A CN 101718190A
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Abstract
The invention discloses a completed well body structure with a temporary plugging function screen pipe and a well completion method for suspending a screen pipe at a tail pipe. The well body structure comprises a multifunctional well washing valve, a screen pipe and a suspending isolator which are connected from bottom to top, wherein the screen pipe adopts a screen pipe with the temporary plugging function. The well completion method comprises the following steps of: constructing a pipe string of the completed well body structure with the temporary plugging screen pipe, putting down the pipe string to the position and carrying out slurry replacement by positive or reverse circulation; throwing a ball, sealing a passage of the screen pipe with the temporary plugging function and a delivering tool and continuously pressing the ground to enable the suspending isolator to be suspended and sealed; putting a drilling tool down to drill a plugging cover of the screen pipe and then putting into production. In the invention, the temporary plugging screen pipe which can be opened is opened when necessary to conveniently remove the plugging on the surface of a filter layer of the screen pipe in the processes of putting down the screen pipe, cleaning annular slurry, and the like of the slurry in a well barrel, achieves the approximately ideal production efficiency, changes the traditional screen pipe well completion procedure and can reduce the complexity of the traditional well completion process and effectively solve the problem of slurry cake plugging in the process of putting down the screen pipe simultaneously.
Description
Technical field
The invention belongs to the oil gas well mining technical field, relate in particular to a kind of completion method of completion interval of well body structure and the tail tube hanging screen casing thereof with the temporary plugging function screen casing.
Background technology
Sieve tube completion now has been a kind of completion mode that generally adopts both at home and abroad.Wherein the effect of screen casing provides the passage that gas stream enters pit shaft, for sand output well, play the effect of strainer, can effectively prevent the various harm that formation sand production causes, for the oil gas well that does not shake out, mainly play and keep hole stability and prevent that chip from entering the effect of pit shaft.But implement screen sand control completion process need and effectively solve the blockage problem of drilling fluid the screen casing and the borehole wall.
At first, the structure that needs to introduce existing conventional screen casing is arranged, it can be divided into two big classes:
The first kind is to be the screen casing of representative with cutting seam sieve tube, star-gapping sieve tube: be characterized on the tubing and casing body by blade, laser cutting, or inlay filter element (filter medium is mainly wire lath, metal wool) after the boring and play through-flow, sand control effect.
Second class be with wire-wrapped screen, metal screen cloth sand screen, and restraining liner be the screen casing of representative: be characterized in boring additional filter media on the tubing and casing body of circular hole, filter element structure and material can be according to actual conditions differences to some extent, and the tubular filter medium is sleeved on back welding fabrication on the boring tubing and casing.
More than two class screen casings at home and abroad use in a large number in the barefoot completion, wherein cutting seam sieve tube is mainly used in the formation sand production particle more slightly or under the situation of not shaking out, and wrapping wire, wire lath, metal wool etc. as the screen casing of filter medium be mainly used in the formation sand production particle be in, under the situation of fine sand.
In the oil gas well completion work progress, screen casing is lowered to usually at first, be lowered in the process at pipe string that original mud (water, solid particle, additive etc.) can enter in the screen casing by the screen casing filter medium in the well under the inside and outside differential pressure effect, along with screen insertion arrives assigned address, can form mud cake on screen casing filter medium surface, filter medium is inner can to form particle deposition, causes the screen casing permeability decrease, directly influences the oil gas well production.
Be lowered to process and mud returns the blockage problem that causes in row's process in order effectively to solve screen casing in completion, each state has all taked measure targetedly.Mainly contain dual mode at present and solve the blockage problem of mud to screen casing, every kind of scheme has its pluses and minuses.
Present stage, typical bore hole sieve tube completion mainly contained two kinds of completion mode:
1, tail tube hanging screen casing mode, the pipe string structure is as follows, connects successively from bottom to up multi-functional flushing valve, screen casing, hanging packer are set;
2, crest water flooding mud mode, the pipe string structure is as follows, connects successively from bottom to up multi-functional flushing valve, screen casing, blind plate, external packer of pipe, stage cementing device and sleeve pipe are set, until well head.
Adopt conventional screen casing to carry out in the completion process, take following well-flushing mode usually according to the completion mode difference:
A) tail tube hanging screen casing mode---circulation is for slurry block releasing technique 1 (referring to Fig. 1)
When the bore hole sieve tube completion, earlier with flushing valve 1, screen casing 2, hanging packer 4, well-flushing pipe string 3 connects the back successively down to the interior assigned address of well, this moment, flushing valve was shown in an open position, just is carrying out or counter suppressing on ground, the cleaning completion fluid will be by well-flushing pipe string 3, flushing valve 1 arrives the annular space of well and screen casing, set up circulation, by circulation the drilling mud displacement is come out, carry out pitching subsequently in the pipe, passage between closed well washing pipe string 3 and the flushing valve 1, ground continue to increase pressure, make hanging packer 4 do extension, the seat envelope, and make hanging packer 4 and running tool realize separating, propose under running tool and the well-flushing pipe string 3 subsequently.By above operation, can realize managing for one time going here and there to finish setting, replacing slurry, pickling operation.
Utilize multi-functional well washing apparatus just carrying out or anti-circulation well cleanup, for behind the slurry again pitching suppress and sit to hang and the envelope that expands, mud can avoid the screen casing blockage problem to take place not by screen casing in whole washing well process, and the risk that is difficult to trip out was blocked in existence when the well-flushing pipe string 3 that still is lowered in advance proposed.
B) tail tube hanging screen casing mode---circulation is for slurry block releasing technique 2 (see figure 2)s
When the bore hole sieve tube completion, earlier with flushing valve 1, screen casing 2, hanging packer 4, connect the back successively down to the interior assigned address of well, this moment, flushing valve 1 was in the closed position, carry out pitching subsequently in the pipe, passage between sealing running tool and the screen casing, ground increases pressure, make hanging packer 4 do extension, the seat envelope, and make hanging packer 4 and running tool realize separating, and running tool is proposed, be lowered under the well-flushing pipe string 3 subsequently, when well-flushing pipe string 3 front ends arrive flushing valve 1 flushing valve 1 is disclosed out, set up circulation canal, replace the slurry operation, finish the back and propose 3 operations of well-flushing pipe string.
In whole completion process, can't avoid being lowered to screen casing blockage problem generation in the process, the big quantity of fluid of well-flushing circulation time easily causes screen casing to damage by screen casing simultaneously.Also must be lowered to well-flushing pipe string 3 during operation separately and replace the slurry operation.
C) crest water flooding mud mode---circulation is for the slurry block releasing technique
With tail tube hanging screen casing mode---circulation is similar for slurry block releasing technique 2, no longer describes in detail, also must be lowered to well-flushing pipe string during operation separately and replace the slurry operation.
More than several modes all need to be lowered to again well-flushing pipe string and replace the slurry de-plugging, increased on the one hand working procedure, prolong duty cycle, strengthened the completion cost, increased on the other hand and gone into well tool and operation pipe string quantity, also strengthened operating risk.
Summary of the invention
The purpose of this invention is to provide a kind of completion interval of well body structure with the temporary plugging function screen casing, under this kind structure design, can overcome in the screen insertion process of prior art the mud cake blockage problem.
Another object of the present invention provides a kind of completion method of tail tube hanging screen casing, and it has changed existing sieve tube completion operation, has reduced the complexity of traditional well-completing process, can effectively solve the mud cake blockage problem in the screen insertion process simultaneously.
For achieving the above object, at the difference of completion mode, the present invention takes following design scheme:
A kind of completion interval of well body structure with the temporary plugging function screen casing, be connected with multi-functional flushing valve, screen casing, hanging packer successively until well head from bottom to up, described screen casing adopts the screen casing of band temporary plugging function, wherein, this screen casing with temporary plugging function is constituted by central tube and the outer attached filter sleeve that has filtration beds with some through holes on the tube wall, and each through hole is equipped with blanking cover.
The blanking cover that through hole on the described screen casing tube wall with temporary plugging function sets is by being threaded, welding, riveting or being embedded on each through-hole wall.This blanking cover is cylinder, and the cylinder external cylindrical surface can have the syndeton with the through hole coupling, and blanking cover is provided with a blind hole towards the central tube end face.
A kind of tail tube hanging screen casing completion method, its method step is as follows:
1) the pipe string of the completion interval of well body structure of construction such as above-mentioned band temporary plugging function screen casing at first is connected with screen casing, the hanging packer of multi-functional flushing valve, band temporary plugging function from bottom to up successively until well head;
2) utilize running tool that the pipe string of step 1) construction is transferred and put in place, just or instead circulate and carry out mud for starching:
3) after the pitching, the screen casing of confining zone temporary plugging function and the passage of running tool, continuation ground is suppressed and is made hanging packer seat extension, seat envelope;
4) propose running tool, be lowered to and go into operation after drilling tool bores the blanking cover of driving screen casing;
5) go into operation.
The present invention is by to having the comprehensive study that sand control technique and bore hole sieve tube completion mode combine now, and at the blockage problem that causes after the mud diafiltration, the sieve tube completion system architecture of blanking cover sand control and supporting completion technology for washing well are with in research and development.The technology of the present invention is mainly used in the oil gas well shaft building process, be applicable in horizontal well, sidetracked hole, the directional well bore hole sieve tube completion process, it utilizes openable temporarily stifled screen casing, open in the time of necessary, to remove mud in the pit shaft easily in screen insertion with remove in the process such as annular space mud, reach near desirable prouctiveness to the obstruction on screen casing filtration beds surface.
Advantage of the present invention is:
1, the design of system architecture of the present invention; at first stopped pipe string and be lowered in the process that original mud can enter in the screen casing by the screen casing filter medium in the well under the inside and outside differential pressure effect; make go into the well and the slurry replacement process in can play a very good protection to the screen casing filtration beds; avoid forming filter cake and stop up screen casing, drop to minimum to the influence of screen casing mud on filtration beds surface.
2, the design of system architecture of the present invention, making does not need to be lowered to separately well-flushing pipe string for the slurry de-plugging time, can directly carry out positive and negative circulation for slurry de-plugging operation.
3, completion method of the present invention can be simplified existing completion for the slurry operating type greatly effectively preventing and reducing mud in the pit shaft to the obstruction of sand control screen filtration beds simultaneously, reduces and bores number of times down, saves the activity duration, improves displacement efficiency.
Description of drawings
Fig. 1 is that prior art completion method one is implemented view.
Fig. 2 is another enforcement view of prior art completion method.
Fig. 3 implements view for the completion method of tail tube hanging screen casing of the present invention.
Fig. 4 is the temporarily stifled screen construction schematic diagram (original state before the completion practice) in the completion interval of well body structure of band temporary plugging function screen casing.
Fig. 5 is the blanking cover structural representation of temporarily stifled screen casing.
Fig. 6 opens the job state structural representation for the temporarily stifled screen casing in the completion interval of well body structure of the present invention.
Arrow direction indication among above-mentioned Fig. 1 to Fig. 3 represents to suppress the direction of setting up circulation canal.
The specific embodiment
Completion interval of well body structure form of the present invention adopts form of structure shown in Figure 3, be connected with multi-functional flushing valve 1, screen casing 2, hanging packer 4 successively until well head from bottom to up, important improvement point of the present invention is the brand new design to screen casing 2, thereby realize completion method of the present invention, and be better than the completion method of prior art greatly.
Referring to Fig. 4, the screen casing body 2 that the present invention has temporary plugging function is constituted by outer filter ruffle excessively (overcoat 23, filtration beds 22 are integrated) and inner central tube 21, the tubing and casing through hole (boring) of the some API of meeting standards is arranged on the central tube 21, be connected with blanking cover 24 in each through hole.
Described blanking cover 24 can be by being threaded, welding, riveting, inlaying or the mode of above several any combinations being connected with each through hole on the central tube.
Referring to Fig. 5, described blanking cover 24 is cylinder, its end face towards the central tube outer tube wall offers a blind hole 25, be threaded or other connection features on this blanking cover cylinder external cylindrical surface, its with should guarantee after the through hole offered on the screen base pipe tube wall is connected in blind hole depth greater than the center thickness of pipe, and the blanking cover employing has certain bearing capacity and easily bores (removal) material and make, after drilling tool removes its part brill, the cecum of blanking cover blind hole is cut, blind hole 25 becomes through hole (referring to Fig. 6), is cooperated to realize purpose of the present invention.
Being utilized as completion system structure of the present invention and can realizing easier and effective completion method, below is specific implementation method:
The completion method concrete grammar step of tail tube hanging mode of the present invention is as follows:
1) at first the construction band blocks up the pipe string of the completion system structure of screen casing temporarily, be connected with multi-functional flushing valve 1, screen casing 2, hanging packer 4 successively until well head from bottom to up, screen casing wherein is the screen casing 2 of the band temporary plugging function of structure shown in Figure 1, the central tube 21 of screen casing relies on the screw thread of each screwed hole (also being through hole) on it to connect with 1 blanking cover 24, and the through hole of screen casing is in and is blocked up state temporarily;
2) with running tool the pipe string of step 1) construction is transferred to oil gas well assigned address, the central tube 21 inside and outside liquid of the screen casing 2 of this moment can't utilize the through hole on the tube wall to flow, play the inside and outside effect that is communicated with of temporary transient quarantine center pipe, thereby filtration beds 22 surfaces of avoiding crossing filter ruffle outside form filter cake and stop up screen casing.With the ground connecting line, just carrying out or instead circulating suppressing, flushing valve 1 is opened under pressure, sets up circulation canal, subsequently, injects the cleaning well killing fluid by ground in the pipe string of construction and carries out slurry replacement;
3) after slurry replacement finishes, drop into steel (rubber) ball in the pipe string, the passage of sealing screen casing and running tool continues ground and suppresses, and makes 4 extensions of hanging packer, seat envelope;
4) running tool is proposed, be lowered to drilling tool and bore the blanking cover 24 of driving screen casing 2, this moment blanking cover cut after, the structure of screen casing 2 changes, as shown in Figure 6, the cecum of former blanking cover blind hole disappears, and blind hole has become through hole, utilizes this through hole can provide central tube 21 inside and outside gas stream to realize inside and outside the flowing of pipe then;
5) go into operation.
The advantage of completion method maximum of the present invention is: need not be lowered to well-flushing pipe string during for the slurry de-plugging, can directly just carry out or anti-the circulation for slurry pickling de-plugging construction operation.
The various embodiments described above can not depart from the scope of the present invention down in addition some variations, thus more than explanation comprise and accompanying drawing shown in structure should be considered as exemplary, but not in order to limit claim of the present invention.
Claims (4)
1. completion interval of well body structure with the temporary plugging function screen casing, be connected with multi-functional flushing valve, screen casing, hanging packer successively until well head from bottom to up, it is characterized in that: described screen casing adopts the screen casing of band temporary plugging function, wherein, this screen casing with temporary plugging function is constituted by central tube and the outer attached filter sleeve that has filtration beds with some through holes on the tube wall, and each through hole is equipped with blanking cover.
2. the completion interval of well body structure of band temporary plugging function screen casing according to claim 1 is characterized in that: the blanking cover that the through hole on the described screen casing tube wall with temporary plugging function sets is by being threaded, welding, riveting or being embedded on each through-hole wall.
3. the completion interval of well body structure of band temporary plugging function screen casing according to claim 1 is characterized in that: described blanking cover is cylinder, and the cylinder external cylindrical surface has the syndeton with the through hole coupling, and blanking cover is provided with a blind hole towards the central tube end face.
4. the completion method of a tail tube hanging screen casing is characterized in that method step is as follows:
1) the pipe string of the completion interval of well body structure of construction band temporary plugging function as claimed in claim 1 screen casing at first is connected with screen casing, the hanging packer of multi-functional flushing valve, band temporary plugging function from bottom to up successively until well head;
2) utilize running tool that the pipe string of step 1) construction is transferred and put in place, just or instead circulate and carry out mud for starching:
3) after the pitching, the screen casing of confining zone temporary plugging function and the passage of running tool, continuation ground is suppressed and is made hanging packer seat extension, seat envelope;
4) propose running tool, be lowered to drilling tool and bore the blanking cover of driving screen casing;
5) go into operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN200910241704A CN101718190B (en) | 2009-12-08 | 2009-12-08 | Completed well body structure with temporary plugging function screen pipe and well completion method for suspending screen pipe at tail pipe |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910241704A CN101718190B (en) | 2009-12-08 | 2009-12-08 | Completed well body structure with temporary plugging function screen pipe and well completion method for suspending screen pipe at tail pipe |
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| CN101718190B CN101718190B (en) | 2012-10-24 |
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Cited By (10)
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| CN102080521A (en) * | 2010-12-13 | 2011-06-01 | 中国石油集团长城钻探工程有限公司 | Slurry displacement process for screen pipe well completion oil and gas well |
| CN103874826A (en) * | 2011-10-14 | 2014-06-18 | 哈利伯顿能源服务公司 | Well screen with extending filter |
| CN105041267A (en) * | 2015-08-24 | 2015-11-11 | 山东普瑞思德石油技术有限公司 | Third-section acid pickling integrated well completion pipe string and method |
| CN105863588A (en) * | 2016-04-28 | 2016-08-17 | 重庆科技学院 | Balanced injection and recovery method of thickened oil thermal recovery horizontal well |
| CN106103886A (en) * | 2013-12-30 | 2016-11-09 | 达西科技有限公司 | For the method and apparatus destroying filter cake |
| CN110242232A (en) * | 2018-03-09 | 2019-09-17 | 成都汉科石油技术有限公司 | A kind of tubing string and construction technology having cleaned well for high temperature and pressure oil/gas well |
| CN112078331A (en) * | 2020-09-29 | 2020-12-15 | 博耐尔汽车电气系统有限公司 | Water pipe installation structure and method for warm air core body of automobile air conditioner |
| CN112096301A (en) * | 2019-06-17 | 2020-12-18 | 中国石油天然气股份有限公司 | Sand prevention integrated well completion pipe string for replacing slurry and washing oil and gas well and replacing slurry and washing method |
| CN112443285A (en) * | 2019-09-02 | 2021-03-05 | 中国石油天然气股份有限公司 | Sand prevention device capable of replacing slurry outside pipe and slurry replacing method |
| CN114427362A (en) * | 2020-10-29 | 2022-05-03 | 中国石油化工股份有限公司 | Temporary plugging method for well completion |
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| CN2310148Y (en) * | 1997-11-25 | 1999-03-10 | 胜利石油管理局采油工艺研究院 | Multi-function completedwell limb for horizontal well |
| US6619397B2 (en) * | 1998-11-03 | 2003-09-16 | Baker Hughes Incorporated | Unconsolidated zonal isolation and control |
| CN201057017Y (en) * | 2007-06-26 | 2008-05-07 | 大港油田集团有限责任公司 | Multilevel packing well completion technique tubular pile |
| CN101089360A (en) * | 2007-07-12 | 2007-12-19 | 西南石油大学 | Well completion method and device of diverticulum with outer packer combined with sieve tube |
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| CN102080521A (en) * | 2010-12-13 | 2011-06-01 | 中国石油集团长城钻探工程有限公司 | Slurry displacement process for screen pipe well completion oil and gas well |
| CN103874826A (en) * | 2011-10-14 | 2014-06-18 | 哈利伯顿能源服务公司 | Well screen with extending filter |
| CN106103886A (en) * | 2013-12-30 | 2016-11-09 | 达西科技有限公司 | For the method and apparatus destroying filter cake |
| US10718183B2 (en) | 2013-12-30 | 2020-07-21 | Halliburton Manufacturing And Services Limited | Downhole apparatus for disrupting filter cake |
| CN105041267A (en) * | 2015-08-24 | 2015-11-11 | 山东普瑞思德石油技术有限公司 | Third-section acid pickling integrated well completion pipe string and method |
| CN105041267B (en) * | 2015-08-24 | 2018-05-22 | 山东普瑞思德石油技术有限公司 | Three open pickling integration completion tubular column and method |
| CN105863588A (en) * | 2016-04-28 | 2016-08-17 | 重庆科技学院 | Balanced injection and recovery method of thickened oil thermal recovery horizontal well |
| CN110242232A (en) * | 2018-03-09 | 2019-09-17 | 成都汉科石油技术有限公司 | A kind of tubing string and construction technology having cleaned well for high temperature and pressure oil/gas well |
| CN112096301A (en) * | 2019-06-17 | 2020-12-18 | 中国石油天然气股份有限公司 | Sand prevention integrated well completion pipe string for replacing slurry and washing oil and gas well and replacing slurry and washing method |
| CN112443285A (en) * | 2019-09-02 | 2021-03-05 | 中国石油天然气股份有限公司 | Sand prevention device capable of replacing slurry outside pipe and slurry replacing method |
| CN112078331A (en) * | 2020-09-29 | 2020-12-15 | 博耐尔汽车电气系统有限公司 | Water pipe installation structure and method for warm air core body of automobile air conditioner |
| CN114427362A (en) * | 2020-10-29 | 2022-05-03 | 中国石油化工股份有限公司 | Temporary plugging method for well completion |
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Application publication date: 20100602 Assignee: Tianjin An Dong petroleum machinery Manufacturing Co., Ltd Assignor: Anton Oilfield Services (Group) Ltd. Contract record no.: 2014990000952 Denomination of invention: Completed well body structure with temporary plugging function screen pipe and well completion method for suspending screen pipe at tail pipe Granted publication date: 20121024 License type: Exclusive License Record date: 20141224 |
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