CN202325434U - Closable balancing sieve tube for horizontal wells and closing tool for closable balancing sieve tube - Google Patents
Closable balancing sieve tube for horizontal wells and closing tool for closable balancing sieve tube Download PDFInfo
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- CN202325434U CN202325434U CN2011203449423U CN201120344942U CN202325434U CN 202325434 U CN202325434 U CN 202325434U CN 2011203449423 U CN2011203449423 U CN 2011203449423U CN 201120344942 U CN201120344942 U CN 201120344942U CN 202325434 U CN202325434 U CN 202325434U
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- sliding sleeve
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Abstract
The utility model relates to a closable balancing sieve tube for horizontal wells and a closing tool for the closable balancing sieve tube. The closable balancing sieve tube comprises a sand prevention device, a throttling device and a closable sliding sleeve, wherein the sand prevention device comprises a protective screen, a sieving screen and a base tube which have a cylindrical structure from the outside to the inside, bars are arranged on the base tube to form a flowing channel for a fluid; the throttling device comprises a throttling device sheath and a disc type sprayer throttling ring; the closing tool has a hinge structure, and a closing block of the closing tool is provided with a contact surface which corresponds to a closable sliding sleeve; the disc type sprayer throttling ring is provided with a plurality of sprayers along the axial direction of the disc type sprayer throttling ring; and the fluid is accelerated and decelerated for multiple times inside the throttling device, so that energy is consumed, and the aim of throttling is fulfilled. The closable balancing sieve tube has a simple integral structure, and production differential pressure of production sections of different horizontal wells can be regulated flexibly while sand is prevented, so that the bottom water cresting of the horizontal wells is delayed well, the closable balancing sieve tube can be matched with the closing tool to close well sections of which effluent is serious, and the yield of crude oil is improved.
Description
Technical field
The utility model relates to a kind of balance screen casing that can realize sand control and inflow control that utilizes down-hole sand control installation, throttling arrangement to combine with shutoff device, belongs to the special horizontal well completion technical field of oil and natural gas.
Background technology
Horizontal well is as a kind of technology of oil-gas field development efficiently, and by the development of twentieth century middle period, its range of application is increasingly extensive even to this day, and relevant advanced technology emerges in an endless stream.Since getting into 21st century, along with the demand sharp increase to petroleum resources, the horizontal well technology at home and abroad importance in the petroleum industry field has highlighted very soon.Horizontal well development oil-gas reservoir has its distinctive advantage, and that is exactly in horizontally extending well of the inner existence of oil reservoir, often has bigger drainage area than the straight well that vertically penetrates oil reservoir.Find through theoretical research owing to increased the drainage area of oil reservoir, make horizontal well near in addition when being lower than the straight well producing pressure differential, just can obtain to exceed several times output than straight well.
Yet horizontal well shakes out in exploitation easily can cause underground equipment, ground installation and instrument, as: the abrasion and the infringement of eliminator, pump, pipeline etc., also can cause the obstruction of down-hole, reduce horizontal well production even force horizontal well to stop production.Simultaneously; In process of production, horizontal segment receives reservoir heterogeneity easily, follows the influence of toe-end effect, and unbalanced production will appear in horizontal well; Thereby cause the awl of end water, pneumatic jack to advance; Make the pit shaft premature water breakthrough, see gas, horizontal productivity is caused very adverse influence, influence the economic benefit of oil reservoir development.Bore in the factor into to oil well at numerous end water that influence, producing pressure differential is decisive role often.From the angle of permeation fluid mechanics, producing pressure differential is that end water is bored power into to oil well, so the awl of in oil field development, wanting to control end water advances; Just must reasonably regulate producing pressure differential; Therefore under the condition that limiting economic rate allows, suitably reduce producing pressure differential and can effectively delay the bottom-water breakthrough time, prolong the oil well water-free oil production period, improve ultimate recovery; The stabilize oil water termination prevents that oil water relation is complicated in the oil reservoir.
At present, for addressing the above problem, need start with: 1, carry out the sand control processing to producing section from two aspects; 2, carry out pressure control to reach the purpose that balance is recovered the oil to producing section.On existing anti-sandpipe basis, install throttling arrangement additional and form a kind of horizontal well down-hole partition balancing extracting device of oil that can realize sand control and inflow control; This method is in well, to be lowered to special-purpose oil tool and packer; Packer is divided into a plurality of independently unit with oil well output section; Make the water of single product section output can channelling not arrive other unit; Fluid is regulated producing pressure differential through flow throttling device after the filtration of special-purpose oil tool sand control installation, flow at last in the flow string and under the effect of pressure reduction, flows out to ground.In the long-term exploitation of horizontal well, the use of special-purpose oil tool can delay the pit shaft water breakthrough time to a certain extent, yet the uneven distribution of horizontal well payzone producing pressure differential can cause the oil pipe inner fluid to produce uneven flowing.The high pressure payzone causes harmful effect to the low pressure payzone; Form uneven production, can bore very soon at the end water of high pressure payzone pars infrasegmentalis, it is inevitable to produce the section water breakthrough; Conventional sieve tube completion can not control effectively to producing the serious well section of water, causes moisture content fast rise and final compelled closing a well in.
Summary of the invention
The utility model technical problem to be solved just is: provide a kind of balance screen casing of closing can the permanently effective use in the down-hole, delay the pit shaft water breakthrough time, can effectively control the serious well section of water outlet in the oil mining later stage.
For solving the problems of the technologies described above, the utility model provides a kind of balance screen casing of closing, and comprises sand control installation, throttling arrangement and shutoff device, and said sand control installation comprises catch net, screen cloth and parent tube; Said throttling arrangement comprises throttling arrangement overcoat and disc type nozzle restrictor ring, and said shutoff device comprises can close sliding sleeve and sliding sleeve closing tool.
Transfer and receive borehole wall extruding, collision deformation to damage screen cloth in the process in order to prevent to close the balance screen casing; Reduce sand control capability; Be outside equipped with catch net at said screen cloth; Said catch net can filter out the big sand grains in the fluid when shielding, and said catch net is arranged on the upper and lower joint of sieve part, makes between catch net and the screen cloth and leaves distance.
In order to form the channel that fluid flows, said parent tube radially is provided with many ribs, in said top connection, has prebored hole and parent tube internal communication, and said screen cloth is arranged on the rib.
In order to make the throttling segment structure tightr; Increase the number of unit length throttling unit simultaneously, the said disc type nozzle of the utility model restrictor ring axially is provided with a plurality of nozzles along it; Fluid through repeatedly quickening, slow down, has consumed the purpose that energy reaches throttling in restriction portion inside.
For the throttle pipe string is not relatively moved under the impact of fluid, said throttling arrangement overcoat, sieve part top connection are provided with step, and disc type nozzle restrictor ring is pushed against installation.
Circulating mud gets into restriction portion through the top connection prebored hole when preventing that instrument from going into the well, and plug nozzle, the utility model be spot welding one circle sand control screens in the top connection prebored hole, filters the bulky grain solid in the mud.
In order to realize installing, in time go into the well, reduce operating risk according to real-time log data scene, well site; The utility model is designed to disc type nozzle restrictor ring with throttling arrangement; Can be according to the number of the data assembled on site that records, adjustment nozzle switch; The different producing pressure differentials of producing section of control are realized the full well section of oil well draining.
For the serious well section of water outlet is control effectively; The utility model provides shutoff device to comprise can close sliding sleeve and sliding sleeve closing tool; The said sliding sleeve of closing is fixed on shear pin that top connection is inner to be cooperated with the top connection slides within; Can close the sliding sleeve lower end and have and close the corresponding groove of piece projection profile with closing tool and cooperate with the sliding sleeve closing tool and realize closing, said sliding sleeve closing tool comprises top connection, core pipe, spring block, spring urceolus, spring, piston, closes piece, telescopic claw, sleeve and lower contact.
Description of drawings
Fig. 1 is for can close balance screen casing general structure sketch map.
Fig. 2 is the said balance screen sand control device vertical section structure sketch map of closing of the utility model.
Fig. 3 is the said balance screen sand control device cross section structure sketch map of closing of the utility model.
Fig. 4 is the said balance screen casing throttling segment structure sketch map of closing of the utility model.
Fig. 5 is the said sliding sleeve of closing of the utility model.
Fig. 6 is the said sliding sleeve closing tool of the utility model.
The specific embodiment
For the purpose, technical scheme and the advantage that make the utility model is clearer, the utility model is done further explanation below in conjunction with accompanying drawing.
As shown in Figure 1; The utility model provides a kind of balance screen casing and closing tool thereof of closing; The said balance screen casing of cutting out includes top connection 1, can cut out sliding sleeve 4; Said top connection is provided with the top connection prebored hole 9 that is communicated with restriction portion, and the said sliding sleeve 4 of closing is fixing with top connection 1 through shear pin 2; It is as shown in Figure 4 that said screen casing is provided with throttling arrangement, and said throttling arrangement comprises disc type nozzle restrictor ring 12; The inlet of said throttling arrangement is communicated with the sand control installation outlet, and the outlet of throttling arrangement is communicated with top connection prebored hole 9.
Fig. 2, Fig. 3 are respectively balance screen sand control device vertical section, cross section structure sketch map, and said sand control installation includes parent tube 11, catch net 14, sand control screens 15, rib 16, sieve part lower contact 17, and top connection 1 and parent tube 11 are through being threaded; Rib 16 radially is welded in the circulation that forms fluid on the parent tube 11; Sand control screens 15 upper ends and the welding of sieve part top connection 13 leave from office terraces are fixing, and lower end and the welding of sieve part lower contact 17 leave from office terraces are fixing; Appear on the stage terrace welding of catch net 14 upper ends and sieve part top connection 13 is fixing, and lower end and the sieve part lower contact 17 terrace welding of appearing on the stage is fixed; Sieve part lower contact 17 pushes against catch net 14, sand control screens 15, and is fixedly welded on the parent tube 11.
Fig. 4 is a balance screen casing throttling segment structure sketch map, and said restriction portion is made up of parent tube 11, overcoat 10, sand control screens 8, disc type nozzle restrictor ring 12, sieve part top connection 13; Said sieve part top connection 13 forms ascending throttling chamber with parent tube 11, and said sieve part top connection 13 is provided with big or small duct, and macropore and aperture road form the throttling passage that fluid flows.
Above-mentioned balance screen casing throttling capacity can be regulated through the number that changes disc type restrictor ring 12 perforate switches; Overcoat 10 adopts to be threaded with sieve part top connection 13 and forms the throttling chamber of sealing with last block 5, and for guaranteeing sealing, last block 5 is provided with multiple-sealed circle 3c with disc type restrictor ring 12.
Fig. 5, Fig. 6 are respectively and can close sliding sleeve and sliding sleeve closing tool structural representation, and the said sliding sleeve of closing is provided with screwed hole 25, seal groove 26, and portion has groove 27a within it; Said sliding sleeve closing tool comprises top connection 28, core pipe 29, spring block 30, spring urceolus 31, spring 32, piston 33, closes piece 34, telescopic claw 35, sleeve 36 and lower contact 37, closes piece 34 and is provided with and can close the projection 27b that sliding sleeve 4 groove 27a are complementary; During use, can close sliding sleeve 4 and be connected the inside of screen casing through sliding sleeve shear pin 2, the sliding sleeve closing tool that is lowered to is closed piece projection 27b should be corresponding with groove 27a; The spacing of step surface should be gone into well front spring 32 and be in the pretension state less than the length of closing piece projection 27b in the completion tubular column simultaneously, closes piece 34 and is in radial dilatation state (shown in Fig. 6 a); The rear spring of going into the well 32 pressurizeds are closed piece 34 and are in radial contraction state (shown in Fig. 6 b), and known need are closed the Position Approximate of water exit end; Before arriving the target location, slowly transfer instrument; Sliding sleeve closing tool projection 27b meshes with closing sliding sleeve groove 27a, continues to transfer the sliding sleeve closing tool, and sliding sleeve shear pin 2 is cut off; Promotion can be closed sliding sleeve and moved down and block prebored hole 9; On carry instrument, at effect lower spring 32 pressurizeds of the conical surface, sliding sleeve closing tool radial contraction projection 27b withdraws from and can close sliding sleeve groove 27a and accomplish the shutoff operation can close sliding sleeve; Equally, close bump size the closed sliding sleeve groove corresponding balance screen casings of closing different production sections different on the piece through changing the sliding sleeve closing tool with the down-hole.
It is simple that this can close balance screen casing overall structure; Can on-the-spotly install according to the real-time log data in well site, the reduction operating risk of in time going into the well; The water ridge advances to have realized full well section draining at the bottom of well delaying horizontal well; Be used and control effectively to producing the serious well section of water with closing tool, prolonged the exploitation time of oil well, improved oil well yield.
Claims (8)
1. closed a balance screen casing and a closing tool thereof that is used for horizontal well completion is made up of sand control installation, throttling arrangement and shutoff device three parts, and it is characterized in that: said sand control installation comprises catch net, screen cloth and parent tube; Said throttling arrangement comprises throttling arrangement overcoat, disc type nozzle restrictor ring; Said shutoff device comprises can close sliding sleeve and sliding sleeve closing tool.
2. balance screen casing and the closing tool thereof of closing as claimed in claim 1, it is characterized in that: said sand control installation is outside equipped with catch net at its screen cloth; Said catch net is arranged on sieve part top connection, the sieve part lower contact; Said parent tube directly upwards evenly is provided with many ribs.
3. balance screen casing and the closing tool thereof of closing as claimed in claim 1 is characterized in that: said disc type nozzle restrictor ring axially is provided with a plurality of nozzles along it.
4. balance screen casing and the closing tool thereof of closing as claimed in claim 1 is characterized in that: said throttling arrangement overcoat, sieve part top connection are provided with step, and disc type nozzle restrictor ring is pushed against installation.
5. balance screen casing and the closing tool thereof of closing as claimed in claim 1 is characterized in that: have prebored hole on the said parent tube, said prebored hole is provided with one deck sand control screens.
6. balance screen casing and the closing tool thereof of closing as claimed in claim 1 is characterized in that: the inlet of said throttling arrangement communicates with the outlet of sand control installation, and the outlet of throttling arrangement communicates with prebored hole in the top connection.
7. balance screen casing and the closing tool thereof of closing as claimed in claim 1 is characterized in that: the said sliding sleeve of closing is fixed on top connection inside through shear pin, has groove can closing the sliding sleeve lower end.
8. balance screen casing and the closing tool thereof of closing as claimed in claim 1 is characterized in that: said closing tool comprises top connection, core pipe, spring block, spring urceolus, spring, piston, closes piece, telescopic claw, sleeve and lower contact; The said piece of closing is provided with and can close the projection that sliding sleeve lower end groove is complementary.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN2011203449423U CN202325434U (en) | 2011-09-15 | 2011-09-15 | Closable balancing sieve tube for horizontal wells and closing tool for closable balancing sieve tube |
Applications Claiming Priority (1)
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CN2011203449423U CN202325434U (en) | 2011-09-15 | 2011-09-15 | Closable balancing sieve tube for horizontal wells and closing tool for closable balancing sieve tube |
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CN202325434U true CN202325434U (en) | 2012-07-11 |
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CN2011203449423U Expired - Fee Related CN202325434U (en) | 2011-09-15 | 2011-09-15 | Closable balancing sieve tube for horizontal wells and closing tool for closable balancing sieve tube |
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Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103061683A (en) * | 2013-01-11 | 2013-04-24 | 西南石油大学 | Dual-purpose tool as drill stem and well completion sieve tube |
CN104295272A (en) * | 2014-10-28 | 2015-01-21 | 中国石油集团西部钻探工程有限公司 | Water controlling device for oil extraction |
CN104481491A (en) * | 2014-12-09 | 2015-04-01 | 中国石油集团川庆钻探工程有限公司 | Circulation control type casing sliding sleeve closing tool |
CN104895533A (en) * | 2015-06-25 | 2015-09-09 | 长江大学 | Horizontal well completion and sand control water controlling screen pipe |
CN105625991A (en) * | 2014-11-06 | 2016-06-01 | 中国石油化工股份有限公司 | Water-controlling and oil-stabilizing inflow controller used for oil extraction system |
CN107476787A (en) * | 2017-09-20 | 2017-12-15 | 长江大学 | A kind of horizontal well completion float-valve type water-control sieve tube |
CN111279051A (en) * | 2017-10-26 | 2020-06-12 | 3M创新有限公司 | Separating device and use of a separating device |
CN113153228A (en) * | 2021-04-08 | 2021-07-23 | 中国石油大学(北京) | System for discharging brine and increasing capacity of gas storage, tubular column device and using method of system |
-
2011
- 2011-09-15 CN CN2011203449423U patent/CN202325434U/en not_active Expired - Fee Related
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103061683A (en) * | 2013-01-11 | 2013-04-24 | 西南石油大学 | Dual-purpose tool as drill stem and well completion sieve tube |
CN104295272A (en) * | 2014-10-28 | 2015-01-21 | 中国石油集团西部钻探工程有限公司 | Water controlling device for oil extraction |
CN104295272B (en) * | 2014-10-28 | 2016-11-02 | 中国石油集团西部钻探工程有限公司 | Oil recovery water control device |
CN105625991A (en) * | 2014-11-06 | 2016-06-01 | 中国石油化工股份有限公司 | Water-controlling and oil-stabilizing inflow controller used for oil extraction system |
CN104481491A (en) * | 2014-12-09 | 2015-04-01 | 中国石油集团川庆钻探工程有限公司 | Circulation control type casing sliding sleeve closing tool |
CN104895533A (en) * | 2015-06-25 | 2015-09-09 | 长江大学 | Horizontal well completion and sand control water controlling screen pipe |
CN104895533B (en) * | 2015-06-25 | 2016-02-17 | 长江大学 | Horizontal well completion sand control water-control sieve tube |
CN107476787A (en) * | 2017-09-20 | 2017-12-15 | 长江大学 | A kind of horizontal well completion float-valve type water-control sieve tube |
CN111279051A (en) * | 2017-10-26 | 2020-06-12 | 3M创新有限公司 | Separating device and use of a separating device |
CN113153228A (en) * | 2021-04-08 | 2021-07-23 | 中国石油大学(北京) | System for discharging brine and increasing capacity of gas storage, tubular column device and using method of system |
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Legal Events
Date | Code | Title | Description |
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C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C17 | Cessation of patent right | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120711 Termination date: 20130915 |