CN204266939U - A kind of water and oil control second completion pipe string combination - Google Patents
A kind of water and oil control second completion pipe string combination Download PDFInfo
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- CN204266939U CN204266939U CN201420479365.2U CN201420479365U CN204266939U CN 204266939 U CN204266939 U CN 204266939U CN 201420479365 U CN201420479365 U CN 201420479365U CN 204266939 U CN204266939 U CN 204266939U
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Abstract
The utility model discloses a kind of water and oil control second completion pipe string combination.Be provided with control water pipe nipple in described second completion pipe string combination, control water pipe nipple is arranged between blind pipe, and packer, blind pipe, control water pipe nipple, blind pipe connect and compose combination successively; Described control water pipe nipple comprises sand control part and control water section.Completion system easy construction of the present utility model, economical and efficient, safe and reliable, effectively can play the effect of control water, steady oil, sand control, efficient balance production profile, solve the exploitation of current oilfield horizontal well layer in water logging problem.
Description
Technical Field
The utility model relates to a well completion field in the well drilling, further say so, relate to a accuse water and stabilize oil secondary well completion tubular column combination.
Background
At present, many oil fields in China enter the middle and later development stages, and as the development time of a horizontal well is prolonged, the problems of edge water and bottom water become more and more important influence factors for inhibiting the yield of an oil-gas well, and the problem of flooding is prominent day by day.
The existing secondary water control technology of the horizontal well generally adopts a mode of firstly finding water and then blocking water, namely, a measuring instrument is put into a production state through a cable, the water outlet condition of each layer is measured, and then a mechanical blocking or blocking agent blocking method is carried out on the water outlet layer section to reduce the water content of the horizontal oil well. The water finding, mechanical blocking or plugging agent plugging method has the advantages of complex construction process, multiple working procedures, high operation difficulty, high technical requirement, frequent rework, secondary operation treatment and the like, high construction risk, high investment, low effective rate and incapability of realizing economic efficiency or poor economic benefit. The main reasons are that the water finding technology cannot completely and truly reflect the water outlet layer section, the oil-water interface is difficult to confirm, and whether the non-water outlet section has the oil outlet potential or not cannot be reflected; secondly, the mechanical blocking or plugging agent has small blocking action radius, and water in the layer can quickly form streaming to ensure that the blocking or plugging measures are invalid; thirdly, damage is caused to the reservoir in the near wellbore area, and the oil phase permeability of the reservoir is reduced
SUMMERY OF THE UTILITY MODEL
In order to solve the problems in the prior art, the utility model provides a secondary well completion system for controlling water and stabilizing oil. The method fundamentally overcomes the defects of the prior art, effectively balances the liquid production profile, solves the problem of flooding in the layer of the current oilfield horizontal well development, and improves the exploitation effect of the horizontal well and the overall development benefit of the oilfield.
The utility model aims at providing a accuse water oil stabilization secondary well completion tubular column combination.
A water control short joint is arranged in the secondary well completion pipe column assembly,
the water control short section is arranged between the blind pipes, and the packer, the blind pipes, the water control short section and the blind pipes are sequentially connected to form a combination;
the water control nipple comprises a sand control part and a water control part;
the sand prevention part comprises an upper joint, a central pipe, a screen combination and a butt plug;
two layers of rib supporting screens which are uniformly distributed in the axial direction and the radial direction are arranged outside the central pipe to form a channel for the fluid to flow to the water control part; the two ends of the central pipe are respectively connected with the upper joint and the butt plug, and the butt plug can realize the quick installation and replacement of the sand prevention part and the water control part on the oilfield site;
the water control part comprises an outer sleeve, a base pipe and a throttling element;
the throttling element is arranged outside the base pipe, and the outer sleeve is sleeved outside the throttling element and the base pipe;
the jacket is positioned on the outermost side of the device and plays a role in protecting the internal structure, the front end of the base pipe in the fluid inflow direction is provided with a flow guide channel and a bulge, the middle part of the base pipe is provided with a converging groove, the middle of the converging groove is provided with an embedded groove, and the throttling piece is arranged in the embedded groove;
the throttling element comprises an inflow channel, a cyclone disc and a throttling nozzle;
the sand control part and the water control part are connected through a butt plug.
Wherein,
the number of the water control short joints is 1-4.
The convergence groove and the embedded groove are arranged around the base pipe, and 4 convergence grooves and embedded grooves are arranged on one base pipe.
The secondary well completion pipe column assembly also comprises a centralizer which is sleeved outside the blind pipe or the water control short section.
The length of the water control short section is less than or equal to 5 m; the length of the sand control part of the water control nipple is less than or equal to 4 m.
The utility model discloses specific technical scheme as follows:
the well completion pipe string is provided with water control short joints, the water control short joints are arranged between blind pipes, and 1-4 water control short joints are arranged according to the flow in the reservoir stratum section sealed by the packer at the installed position.
One water control short section is less than or equal to 5m in length and is generally placed at the tail end of one section of blind pipe, one section of blind pipe is generally arranged behind the water control short section, and a packer is arranged behind the blind pipe. The part between the two packers is called a packing section, the length of each packing section is more than or equal to 50m, the number of the water control short sections to be placed is determined according to the liquid production capacity of a reservoir in each packing section, generally is not less than 1 in each section, and each water control short section is uniformly placed in the middle of a blind pipe in one section and alternately placed with the blind pipe. According to the yield of the domestic horizontal well, 1-4 water discharging and controlling nipples are arranged in each section of the secondary well completion pipe column.
The water control nipple comprises a sand control part and a water control part;
the sand prevention part comprises an upper joint, a central pipe, a screen combination and a butt plug; wherein the central pipe is provided with two layers of rib supporting screens which are uniformly distributed in the axial direction and the radial direction to form a channel for the fluid to flow to the water control part; the water control part comprises an outer sleeve, a base pipe and a throttling element; the parent tube is the important component of whole inflow controller, its front end is equipped with water conservancy diversion channel and arch, the water conservancy diversion channel plays the leading-in purpose of fluid that will get into in the inflow controller, the arch mainly plays the effect that supports the whole accuse water installation intensity of overcoat assurance, the middle-end at the parent tube is equipped with the groove of converging, be equipped with the embedded groove in the centre of converging the groove, the embedded groove mainly is used for according to putting throttle control spare, it arranges around the parent tube to converge groove and embedded groove, arrange 4 on the parent tube. The throttling element is a core component of the water control part of the whole device, and at least comprises an inflow channel, a rotational flow disk and a throttling nozzle, the working principle of the throttling element is that the flowing difference is caused according to the difference of the density and the viscosity of oil and water, and the energy loss of the oil and the water in the conversion process between pressure energy and kinetic energy in the rotational flow process is different due to the flowing difference, so that the high throttling pressure drop and the difference of the pressure drop of the oil and the water are realized, the purposes of generating high throttling resistance when meeting water, generating low throttling resistance when meeting oil and adaptively controlling the flow of water are achieved. The whole water control short joint does not contain movable parts.
The sand control part and the water control part are connected together through a butt plug, a central pipe, an outer sleeve and a base pipe.
The utility model relates to a technical scheme of a secondary well completion pipe string for water and oil control, which is characterized in that blind pipes and water control short sections with different lengths are arranged at intervals in a horizontal well section and are matched with an external packer to seal a well completion pipe string and a well annulus, the combination of the blind pipes, the water control short sections and the external packer is comprehensively utilized to achieve the effects of segmenting a horizontal well and delaying bottom water coning, the external packer is directly connected to the blind pipes (the external packer can also be directly sleeved on the blind pipes), and the blind pipes and the water control short sections are directly put into the well after being combined according to an alternate combination structure; or a scraper is used for drifting and washing the well, and then the completion string is put in. The packer can adopt an oil-water swelling type packer or a ball throwing opening type packer. If the packer which can expand when meeting with water and oil is adopted, light diesel oil or clean water needs to be circulated into the packer to soak the packer after the completion pipe string is put into the packer to promote the rubber to expand, and the soaking time is generally more than 72 hours. If a pitching open type packer is adopted, after a well completion string is lowered, the packer is set under the pressure of 10MPa, and after the packer is set, the releasing ball seat is set under the pressure of 20 MPa.
The blind pipe is a pipe which does not have other communication channels with the outside and has a flow channel inside, the oil pipe can be used as the blind pipe in use, and the packer adopts a self-expansion packer or a ball-throwing opening type packer when meeting oil and water and is used for sealing a reservoir stratum, and horizontal sections of the horizontal well are sealed into multiple sections to prevent water from channeling. The water control nipple adopts an active self-adaptive water nipple, and the liquid production amount entering the output central pipe can be automatically adjusted according to the change of the oil amount and the water amount entering the nipple without manual intervention and electric/liquid driving, so that the liquid production profile is balanced. The centralizers are spring centralizers or any other type of centralizers, which are placed at equal intervals throughout the completion system, away from the packers, in order to center the string.
And (3) putting a blind pipe and packer combination into a horizontal well section of the non-producing zone, sealing off the non-producing zone, and maintaining the formation pressure of the non-producing zone to compensate the pressure loss of the producing zone. For a production zone, a combination of a run-in packer and an adaptive water nipple produces little or no resistance to a producing zone in the production zone and greater resistance to a flooding zone in the production zone. The well completion pipe column can be put in one trip without special operation, and is suitable for open hole wells, cased wells, screen wells with external sections at the early stage, and the like.
The utility model discloses a key part of well completion system is the self-adaptation water nipple joint that can initiatively control water, including sand control part and accuse water part. The sand prevention part mainly comprises an upper joint, a central pipe, a screen combination and a butt plug; wherein the central tube is provided with two layers of rib supporting screens which are uniformly distributed in the axial direction and the radial direction to form a channel for the fluid to flow to the water control part. The water control part comprises an outer sleeve, a base pipe and a throttling element; the sand control part and the water control part are connected together through the butt plug, the central pipe, the outer sleeve and the base pipe, so that a fluid passage is reserved, and the sand control part has the characteristics of reliable sealing and convenience for field replacement. The core component of the water control part is a throttling piece, and the resistance of the water control part to the fluid can be automatically changed according to different properties of the fluid. Fluid can only get into the production tubular column through the choke in the accuse water nipple joint, and fluid flow path is: after entering through the screen mesh, the formation fluid firstly flows through the annular space between the screen mesh and the central pipe, then flows through the connecting joint of the sand control part and the water control part, enters the throttling element of the water control part, and finally enters the production pipe column through the flow regulation of the throttling element, so that the purposes of water control and oil stabilization are achieved.
The utility model discloses an effect:
(1) the utility model relates to a self-adaptation water screen pipe nipple joint need not manual intervention and provides the electricity/liquid power, can independently change the inside flow mode of structure, "throttle" low viscosity fluid, "open source" high viscosity fluid to balanced production liquid section.
(2) The utility model relates to a well completion pipe column is convenient for running in and out, and the purpose of controlling the output of a water production section and improving the output of an oil production section can be realized by one-time pipe column;
(3) the utility model relates to a well completion system lays the accuse water screen pipe in the whole line of horizontal liquid production section, need not make a change water, and any position goes out water and all controls water automatically, and the effective period is long to need not be because of newly-increased water outlet point, and repeated many times water shutoff.
(4) The utility model provides a secondary well completion system can be used to big pump extract well secondary well completion, also can be used to annotate the water and drive oil extract well secondary well completion.
Drawings
FIG. 1 is a schematic view of a water-control and oil-stabilization secondary completion string assembly
FIG. 2 is a schematic view of a water control nipple and fluid flow
Description of reference numerals:
1-producing a tubular column; 2-a packer; 3-water control short section; 4-a safety joint;
5-a centralizer; 6-blind pipe; 7-reservoir bed; 10-a sand control section;
11-upper joint; 12-a central tube; 13-screen combination; 14-a docking plug;
15-a water control part; 16-a jacket; 17-a throttle; 18-base pipe
Detailed Description
The present invention will be further described with reference to the following examples.
Examples
As shown in figure 1, a water-control oil-stabilization secondary completion pipe string combination.
A water control nipple 3 is arranged in the secondary well completion pipe column assembly,
the water control short section 3 is arranged between the blind pipes 6, and the packer, the blind pipes, the water control short section and the blind pipes are connected in sequence to form a combination;
the water control nipple 3 comprises a sand control part 10 and a water control part 15; as shown in figure 2 of the drawings, in which,
the sand control part 10 comprises an upper joint 11, a central pipe 12, a screen combination 13 and a butt plug 14;
two layers of rib supporting screens which are uniformly distributed in the axial direction and the radial direction are arranged outside the central pipe 12 to form a channel for a fluid to flow to the water control part; two ends of the central tube 12 are respectively connected with the upper joint 11 and the butt joint plug 14;
the water control portion 15 comprises an outer jacket 16, a base pipe 18, a throttling member 17;
the throttling element 17 is arranged outside the base pipe 18, and the outer sleeve 16 is sleeved outside the throttling element 17 and the base pipe 18;
the outer sleeve 16 is positioned on the outermost side of the device and plays a role in protecting the internal structure, the front end of the base pipe 18 in the fluid inflow direction is provided with a flow guide channel and a bulge, the middle part of the base pipe is provided with a converging groove, the middle of the converging groove is provided with an embedded groove, and the throttling element is arranged in the embedded groove;
the throttling element 17 comprises an inflow channel, a swirl disc and a throttling nozzle;
the sand control section 10 and the water control section 15 are connected by a docking plug 14.
The secondary well completion pipe column assembly also comprises a centralizer which is sleeved outside the busy pipe or the water control short section.
In the embodiment, 5 packers are adopted to pack the horizontal section of the whole horizontal well into 4 sections, and the 4 sections are divided from left to right in the figure: the water control pipe is respectively called as a first section, a second section, a third section and a fourth section, and a water control short joint is respectively arranged in the first section, the third section and the fourth section. The second section is a non-liquid production section, so that a water control device is not installed, and the second section mainly plays a role in isolating a reservoir and reducing influence on other reservoirs. The number of the blind pipes is mainly related to the length of the packing section, at present, oil pipes are mainly adopted for field application to serve as the blind pipes, the length of one oil pipe is about 9.5 meters, and if the length of a first section is about 80 meters, the length of a second section is about 50 meters, the length of a third section is about 70 meters, and the length of a fourth section is about 100 meters, 7 blind pipes need to be installed in the first section, 5 blind pipes need to be installed in the second section, 6 blind pipes need to be installed in the third section, and 9 blind pipes need to be installed in the fourth section. On average, two blind pipes use a centralizer, and 4 centralizers need to be installed in the first section, 3 centralizers need to be installed in the second section, 4 centralizers need to be installed in the third section, and 5 centralizers need to be installed in the fourth section.
Claims (8)
1. A water-control oil-stabilization secondary completion pipe string combination is characterized in that:
a water control short joint is arranged in the secondary well completion pipe column assembly,
the water control short section is arranged between the blind pipes, and the packer, the blind pipes, the water control short section and the blind pipes are connected in sequence to form a combination.
2. The water-control oil-stabilization secondary completion string assembly of claim 1, wherein:
the water control nipple comprises a sand control part and a water control part;
the sand prevention part comprises an upper joint, a central pipe, a screen combination and a butt plug;
two layers of rib supporting screens which are uniformly distributed in the axial direction and the radial direction are arranged outside the central pipe to form a channel for the fluid to flow to the water control part; two ends of the central tube are respectively connected with an upper joint and a butt joint plug;
the water control part comprises an outer sleeve, a base pipe and a throttling element;
the throttling element is arranged outside the base pipe, and the outer sleeve is sleeved outside the throttling element and the base pipe;
the jacket is positioned on the outermost side of the device and plays a role in protecting the internal structure, the front end of the base pipe in the fluid inflow direction is provided with a flow guide channel and a bulge, the middle part of the base pipe is provided with a converging groove, the middle of the converging groove is provided with an embedded groove, and the throttling piece is arranged in the embedded groove;
the throttling element comprises an inflow channel, a cyclone disc and a throttling nozzle;
the sand control part and the water control part are connected through a butt plug.
3. The water-control oil-stabilization secondary completion string assembly of claim 1, wherein:
the number of the water control short joints is 1-4.
4. The water-control oil-stabilization secondary completion string assembly of claim 2, wherein:
the convergence groove and the embedded groove are arranged around the base pipe, and 4 convergence grooves and embedded grooves are arranged on one base pipe.
5. The water-control oil-stabilization secondary completion string assembly of claim 1, wherein:
the secondary well completion pipe column assembly comprises a centralizer, and the centralizer is sleeved outside the blind pipe or the water control short section.
6. The water-control oil-stabilization secondary completion string assembly of claim 2, wherein:
the length of the sand control part of the water control nipple is less than or equal to 4 m.
7. The water-control oil-stabilization secondary completion string assembly of claim 1, wherein:
the length of the water control short section is less than or equal to 5 m.
8. The water-control oil-stabilization secondary completion string assembly of claim 4, wherein:
the secondary well completion pipe column assembly comprises a centralizer, and the centralizer is sleeved outside the blind pipe or the water control short section;
the length of the sand prevention part of the water control nipple is less than or equal to 4 m;
the length of the water control short section is less than or equal to 5 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420479365.2U CN204266939U (en) | 2014-08-22 | 2014-08-22 | A kind of water and oil control second completion pipe string combination |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420479365.2U CN204266939U (en) | 2014-08-22 | 2014-08-22 | A kind of water and oil control second completion pipe string combination |
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| CN204266939U true CN204266939U (en) | 2015-04-15 |
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| CN201420479365.2U Expired - Lifetime CN204266939U (en) | 2014-08-22 | 2014-08-22 | A kind of water and oil control second completion pipe string combination |
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Cited By (11)
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| CN106555569A (en) * | 2015-09-24 | 2017-04-05 | 中国石油化工股份有限公司 | Control water conservancy project tool |
| CN107218003A (en) * | 2017-07-18 | 2017-09-29 | 中国石油集团渤海钻探工程有限公司 | Coal bed gas continuous punching sandpipe string and its sand washing method |
| CN107956457A (en) * | 2018-01-08 | 2018-04-24 | 北京合力奇点科技有限公司 | Oil recovery water control device, directional well completion flow string and its completion method |
| CN109138938A (en) * | 2017-06-28 | 2019-01-04 | 中国石油化工股份有限公司 | Adjust flow control water installations, pipe nipple, tubing string and two secondary control water completion methods |
| CN109236225A (en) * | 2018-09-04 | 2019-01-18 | 成都北方石油勘探开发技术有限公司 | A kind of horizontal well adjusts flow control water conservancy project to have automatically |
| CN109281620A (en) * | 2018-11-10 | 2019-01-29 | 东营宝业石油技术开发有限责任公司 | A kind of horizontal well machinery intelligent water-controlled tubing string and its water control method |
| CN110017127A (en) * | 2018-01-08 | 2019-07-16 | 中国石油化工股份有限公司 | The water integrated device of acid fracturing control, acid fracturing water control pipe column and acid fracturing water control method |
| CN110130857A (en) * | 2019-03-18 | 2019-08-16 | 中国石油集团长城钻探工程有限公司 | A kind of open-hole horizontal well tune flow control water installations and balanced oil extraction process tubular column |
| CN112302580A (en) * | 2020-11-04 | 2021-02-02 | 中国石油大学(北京) | Horizontal well sand prevention and water control pipe string and oil increasing method thereof |
| CN113863859A (en) * | 2020-06-30 | 2021-12-31 | 中国石油化工股份有限公司 | Shallow natural gas hydrate drilling device, mining system and method |
| CN114109316A (en) * | 2021-11-04 | 2022-03-01 | 中海石油(中国)有限公司湛江分公司 | Segmented water control device and method applied to high-temperature high-pressure deep water gas reservoir |
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- 2014-08-22 CN CN201420479365.2U patent/CN204266939U/en not_active Expired - Lifetime
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106555569A (en) * | 2015-09-24 | 2017-04-05 | 中国石油化工股份有限公司 | Control water conservancy project tool |
| CN109138938B (en) * | 2017-06-28 | 2020-11-10 | 中国石油化工股份有限公司 | Flow regulating and water controlling device, short joint, tubular column and secondary water controlling well completion method |
| CN109138938A (en) * | 2017-06-28 | 2019-01-04 | 中国石油化工股份有限公司 | Adjust flow control water installations, pipe nipple, tubing string and two secondary control water completion methods |
| CN107218003A (en) * | 2017-07-18 | 2017-09-29 | 中国石油集团渤海钻探工程有限公司 | Coal bed gas continuous punching sandpipe string and its sand washing method |
| CN110017127A (en) * | 2018-01-08 | 2019-07-16 | 中国石油化工股份有限公司 | The water integrated device of acid fracturing control, acid fracturing water control pipe column and acid fracturing water control method |
| CN107956457A (en) * | 2018-01-08 | 2018-04-24 | 北京合力奇点科技有限公司 | Oil recovery water control device, directional well completion flow string and its completion method |
| CN107956457B (en) * | 2018-01-08 | 2023-09-26 | 北京合力奇点科技有限公司 | Oil extraction water control device, directional well oil extraction pipe string for well completion and well completion method thereof |
| CN109236225A (en) * | 2018-09-04 | 2019-01-18 | 成都北方石油勘探开发技术有限公司 | A kind of horizontal well adjusts flow control water conservancy project to have automatically |
| CN109236225B (en) * | 2018-09-04 | 2023-10-13 | 成都北方石油勘探开发技术有限公司 | Automatic flow-regulating and controlling water tool for horizontal well |
| CN109281620A (en) * | 2018-11-10 | 2019-01-29 | 东营宝业石油技术开发有限责任公司 | A kind of horizontal well machinery intelligent water-controlled tubing string and its water control method |
| CN110130857A (en) * | 2019-03-18 | 2019-08-16 | 中国石油集团长城钻探工程有限公司 | A kind of open-hole horizontal well tune flow control water installations and balanced oil extraction process tubular column |
| CN113863859A (en) * | 2020-06-30 | 2021-12-31 | 中国石油化工股份有限公司 | Shallow natural gas hydrate drilling device, mining system and method |
| CN113863859B (en) * | 2020-06-30 | 2024-04-05 | 中国石油化工股份有限公司 | Shallow natural gas hydrate drilling device, exploitation system and method |
| CN112302580A (en) * | 2020-11-04 | 2021-02-02 | 中国石油大学(北京) | Horizontal well sand prevention and water control pipe string and oil increasing method thereof |
| CN114109316A (en) * | 2021-11-04 | 2022-03-01 | 中海石油(中国)有限公司湛江分公司 | Segmented water control device and method applied to high-temperature high-pressure deep water gas reservoir |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20150415 |