CN105275430A - Sliding sleeve and layered injection string - Google Patents
Sliding sleeve and layered injection string Download PDFInfo
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- CN105275430A CN105275430A CN201510665392.8A CN201510665392A CN105275430A CN 105275430 A CN105275430 A CN 105275430A CN 201510665392 A CN201510665392 A CN 201510665392A CN 105275430 A CN105275430 A CN 105275430A
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- hole
- ring cavity
- sliding part
- tubing string
- sliding sleeve
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- 238000002347 injection Methods 0.000 title claims abstract description 29
- 239000007924 injection Substances 0.000 title claims abstract description 29
- 239000012530 fluid Substances 0.000 claims abstract description 64
- 239000000463 material Substances 0.000 claims abstract description 21
- 230000009467 reduction Effects 0.000 claims description 11
- 239000007787 solid Substances 0.000 claims description 7
- 238000012856 packing Methods 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 238000010793 Steam injection (oil industry) Methods 0.000 description 2
- 238000007630 basic procedure Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000001502 supplementing effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The application discloses sliding sleeve and layering injection string. The sliding sleeve includes: the fluid channel is arranged along the longitudinal extension direction of the body, and a first through hole is formed in the side wall penetrating through the body; the sleeve body is sleeved outside the body, an annular cavity is formed between the sleeve body and the body, and a second through hole is formed in the wall of the sleeve body; the first sliding part is arranged in the annular cavity and is provided with a plugging part capable of plugging the first through hole; the first sliding part divides the ring cavity into a first ring cavity section and a second ring cavity section, wherein the first ring cavity section is communicated with the first through hole and the second through hole, the second ring cavity section can contain thermal expansion materials, and the thermal expansion materials can expand when the temperature reaches a preset value so as to increase the pressure in the second ring cavity section, so that the first sliding part is pushed to slide in the ring cavity, the plugging of the plugging part on the first through hole is removed, and the first ring cavity section is communicated with the fluid channel.
Description
Technical field
The application belongs to oil gas development technology field, particularly relates to a kind of sliding sleeve and layering injection string.
Background technology
During oil-gas mining, for reducing lifting difficulty, usually can inject in reservoir and have uniform temperature, carry the fluid media (medium) of certain heat with supplementary reservoir energy, described fluid media (medium) can comprise steam, high temperature water, high-temperature gas, foam.Such as during thickened oil recovery, can inject steam in reservoir, the heat utilizing steam to carry, by reducing thick oil viscosity, improves its mobility, thus reduces the lifting difficulty of viscous crude.
When injecting the fluid media (medium) being used for supplementing reservoir energy, can by the tubing string be lowered in the sleeve pipe of Injection Well for described fluid media (medium) provides circulation passage.Fluid media (medium) in tubing string will be guided and enter reservoir, usually need to connect sliding sleeve on tubing string, described sliding sleeve can be opened to link up tubing string and reservoir in predefined conditions.Such as pitching sliding sleeve can be opened when reaching predetermined value the pressure of fluid media (medium) in tubing string, thus is guided by fluid media (medium) and enter reservoir.During concrete enforcement, need to throw in spheroid by tubing string to pitching sliding sleeve, in tubing string, fluid media (medium) is injected again after spheroid packing tubing string and casing annulus, fluid media (medium) builds the pressure in tubing string until pressure reaches predetermined value, the shear pin of pitching sliding sleeve is cut off, pitching sliding sleeve is opened, and links up tubing string and reservoir, can carry out the construction of injecting fluid media (medium) afterwards.Therefore, the operation using pitching sliding sleeve to carry out beam body medium to reservoir is more complicated; In addition, the restriction of the managed column internal diameter of radial dimension of the spheroid of input, often there will be the different Injection Well of tubing string internal diameter needs to be equipped with different pitching sliding sleeves and pitching, so, injects the limited flexibility of fluid media (medium) construction; And spheroid easily causes setting between spheroid and ball seat not tight by entering foreign matter in the impact such as pitching sliding sleeve of other factors, packing tubing string that cannot be good and casing annulus, fluid media (medium) cannot build the pressure in tubing string, causes pitching sliding sleeve to open, and affects the construction of beam body medium.
Summary of the invention
In order to solve at least one problem above-mentioned, the application provides a kind of sliding sleeve and layering injection string.
For achieving the above object, this application provides following technical scheme.
A kind of sliding sleeve, comprising:
The body that lengthwise extends, described body offers the fluid passage for fluid circulation along its lengthwise bearing of trend, and the sidewall running through described body offers the first through hole;
Be sheathed on described external body, be formed with ring cavity between described body and described body, the wall of described body be provided with the second through hole;
Be arranged at the first sliding part in described ring cavity, described first sliding part has closure part, the first through hole described in the energy shutoff of described closure part; Described ring cavity is divided into the first ring cavity section and the second ring cavity section by described first sliding part, wherein:
Described first ring cavity section is communicated with described second through hole;
The accommodating thermal expansion material of described second ring cavity Duan Zhongneng, described thermal expansion material can expand when temperature reaches predetermined value to increase the pressure in described second ring cavity section, thus promote described first sliding part and slide in described ring cavity, thus remove the shutoff of described closure part to described first through hole, be communicated with described fluid passage to make described first ring cavity section.
In an embodiment, described closure part is the second sliding part of the first through hole described in energy shutoff, and described second sliding part is arranged in described fluid passage; Described second sliding part is connected with described first sliding part by connecting portion, and described connecting portion is through described first through hole; Described first sliding part is held up admittedly described second sliding part by described connecting portion and is slided in described fluid passage, to make described second shutoff of sliding part releasing to described first through hole.
In an embodiment, described closure part is provided with third through-hole, and described third through-hole is communicated with described first ring cavity section; Described first sliding part slides into precalculated position in described ring cavity, and described third through-hole is communicated with described first through hole, and the shutoff to described first through hole is removed in described closure part.
In an embodiment, described first sliding part is connected with described body by the shear pin with predetermined shear strength.
In an embodiment, the inwall of described body is provided with shoulder, and described first sliding part is provided with limiting section; Described in the shutoff of described closure part during the first through hole, the solid described shoulder in described limiting section top.
In an embodiment, described body comprises the first body and the second body that removably connect; Wherein said first body near described first ring cavity section, described second body near described second ring cavity section, described first through hole run through be opened in described first body sidewall on; Be formed with gap between described first body and described second body, described in described second sliding part shutoff during the first through hole, the end of described second sliding part is inserted in described gap.
In an embodiment, described body comprises the first set body and the second cover body that removably connect; Wherein said first set body is near described first ring cavity section, and described second cover body is near described second ring cavity section; Described second through hole is arranged on described first set body.
In an embodiment, the direction of described second through hole is roughly identical with the lengthwise bearing of trend of described ring cavity.
Present invention also provides a kind of layering injection string, it comprises:
Can be lowered into the tubing string in precalculated position in the sleeve pipe of Injection Well, form annular space between described tubing string and described sleeve pipe, described tubing string has when being lowered in sleeve pipe near the first end of described Injection Well well head and the second end away from described Injection Well well head;
The first packer be connected with described tubing string, described first packer is between described first end and described second end;
The second packer be connected with described tubing string, described second packer is between described first packer and described second end;
Sliding sleeve as described in one of the claims, described sliding sleeve is connected with described tubing string, and it is between described first packer and described second packer.
In an embodiment, described tubing string also comprises:
Described second end is connected with valve seat, and can throw in spheroid to described valve seat by described tubing string, described spheroid can set on described valve seat with tubing string described in packing and described annular space;
The pressure reduction sliding sleeve be connected with described tubing string, described pressure reduction sliding sleeve is between described first packer and described second end, and described pressure reduction sliding sleeve can be opened to be communicated with described tubing string and described annular space when reaching predetermined value by the pressure in described tubing string.
By above technical scheme, beneficial effect of the present invention is: the condition that the sliding sleeve of the application preferably utilizes the heat of the fluid media (medium) that must inject during supplementary reservoir energy to open as it, and beam body medium is simplified with the constructing operation of supplementary reservoir energy.
In addition, relative to pitching sliding sleeve, cancelling when opening pitching sliding sleeve is the spheroid that the tubing string adapting to different inner diameters throws in different size, only needs the radial dimension of corresponding change joint, the flexibility raising of constructing operation; And be difficult to occur as the problem that pitching sliding sleeve cannot be opened, ensure that beam body medium constructing operation can complete smoothly.
With reference to explanation hereinafter and accompanying drawing, disclose in detail particular implementation of the present invention, specifying principle of the present invention can adopted mode.Should be appreciated that, thus embodiments of the present invention are not restricted in scope.In the spirit of claims and the scope of clause, embodiments of the present invention comprise many changes, amendment and are equal to.
The feature described for a kind of embodiment and/or illustrate can use in one or more other embodiment in same or similar mode, combined with the feature in other embodiment, or substitutes the feature in other embodiment.
Should emphasize, term " comprises/comprises " existence referring to feature, one integral piece, step or assembly when using herein, but does not get rid of the existence or additional of one or more further feature, one integral piece, step or assembly.
Accompanying drawing explanation
In order to the clearer technical scheme explicitly illustrated in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.In the accompanying drawings:
Structural representation when Fig. 1 is second sliding part shutoff the first through hole of a kind of embodiment of the application;
Fig. 2 is structural representation when the second sliding part shown in Fig. 1 removes shutoff to the first through hole;
Structural representation when Fig. 3 is closure part shutoff first through hole of the application's another kind of embodiment;
Structural representation when Fig. 4 is for removing shutoff to the first through hole in the closure part shown in Fig. 3;
The partial enlarged drawing that Fig. 5 is the body shown in Fig. 2 and the first sliding part;
The structural representation of a kind of embodiment that Fig. 6 is the first sliding part shown in Fig. 1 or Fig. 2 and the second sliding part;
The structural representation of the another kind of embodiment that Fig. 7 is the first sliding part shown in Fig. 1 or Fig. 2 and the second sliding part;
Fig. 8 is the structural representation of the layering injection string of the application's embodiment.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out to clear display, intactly described, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
In the description of the application; it will be appreciated that; term " on ", D score, " interior ", the indicating position such as " outward " or position relationship be based on the orientation shown in Figure of description or position; only the application and simplified characterization for convenience of description; instead of indicate or imply that the device of indication or parts must have specific orientation or position; or carry out constructing or operating with specific orientation or position, therefore can not be interpreted as the restriction to the application's protection domain.
Please also refer to Fig. 1 to Fig. 4, a kind of sliding sleeve 10 that the application's embodiment provides, comprise: the body 100 that lengthwise extends, described body 100 offers the fluid passage 103 for fluid circulation along its lengthwise bearing of trend, and the sidewall running through described body 100 offers the first through hole 104.Be sheathed on the body 200 outside described body 100, between described body 200 and described body 100, be formed with ring cavity 300, the wall of described body 200 is provided with the second through hole 204.Be arranged at the first sliding part 401 of described ring cavity 300, described first sliding part 401 has closure part, the first through hole 104 described in the energy shutoff of described closure part.Described ring cavity 300 is divided into the first ring cavity section 301 and the second ring cavity section 302 by described first sliding part 401, and wherein described in the first ring cavity section 301, the second through hole 204 is communicated with.The accommodating thermal expansion material of energy in described second ring cavity section 302, described thermal expansion material can expand when temperature reaches predetermined value to increase the pressure in described second ring cavity section 302, thus promote described first sliding part 401 and slide in described ring cavity 300, thus remove the shutoff of described closure part to described first through hole 104, be communicated with described fluid passage 103 to make described first ring cavity section 301.
In present embodiment, the body 100 being provided with fluid passage 103 roughly can be in a tubular form, its two ends can arrange the threaded joint of tool, be connected so that the tubing string realized with inject fluid media (medium) is dismountable, the radial dimension of joint and screw thread can according to the radial dimension adaptation change of the tubing string be attached thereto.Described tubing string can be lowered in the sleeve pipe of Injection Well, can form annular space between described tubing string and sleeve pipe.Body 100 can be connected with the internal chamber space of tubing string along the fluid passage 13 that longitudinally is offered, for described fluid media (medium) provides circulation passage.First through hole 104 runs through the sidewall of body 100, and it can the space outerpace of communication of fluid path 10 3 and body 100.
Body 200 roughly can in a tubular form, and it can be connected with body 100 is dismountable, such as, for being threaded.The radial dimension of body 200 is greater than the radial dimension of body 100, so when body 200 is sheathed on body 100 outside, can form ring cavity 300 between.When first through hole 104 is opened, the fluid media (medium) in circulation passage 103 can enter into ring cavity 300 through the first through hole 104.The second through hole 204 be arranged on body 200 can be communicated with the space outerpace of ring cavity 300 and body 200 and described annular space, and the fluid media (medium) therefore entered in ring cavity 300 can enter annular space through the second through hole 204 and finally can carry out the reservoir corresponding with described annular space.
First sliding part 401 roughly can in circular, the internal diameter size of the first circular sliding part 401 and the outside dimension of body 100 suitable.Present embodiment does not make restriction to the cross sectional shape of body 100 and the first sliding part 401, as long as it is outer that the first sliding part 401 can be sheathed on body 100, such as both cross sections can be circular, also can be that other shapes are as polygon (quadrangle, hexagon etc.), when both cross sectional shapes are polygon, body 100 can be realized and the first sliding part 401 circumference is fixing, thus rotate when preventing the first sliding part 401 from sliding in ring cavity 300.
First sliding part 401 is movably arranged in ring cavity 300, is namely less than the length dimension of ring cavity 300 along the length dimension of lengthwise bearing of trend first sliding part 401.First sliding part 401 contacts with sealing between the outer wall of body 100 and the inwall of body 200, concrete such as one or more sealing ring can be set on the inwall of the outer wall of the outer wall of the first sliding part 401, body 100 or body 200, thus ring cavity 300 can be divided into the first ring cavity section 301 and the second ring cavity section 302 by the first sliding part 401.First ring cavity section 301 is communicated with the second through hole 204, concrete, and can be formed with gap 61 between the outer wall of the first sliding part 401 and body 100 or body 200 inwall, described gap 61 is connected the first ring cavity section 301 and realized both connection with the second through hole 204 with this.In second ring cavity section 302, the accommodating thermal expansion material of energy, concrete, can bore one or more through hole in advance, insert thermal expansion material through this one or more through hole on the sidewall relevant position of body 200, then by tight for this through hole shutoff; Also can insert thermal expansion material in advance in ring cavity 300, more described first sliding part 401 is loaded ring cavity 300.Described thermal expansion material can expand when temperature reaches predetermined value, such as described expanding material can be solid alcohol, when temperature reaches predetermined value, solid alcohol can volatilize generation gas, due to the chamber that the second ring cavity section 302 is sealing, therefore the gas that thermal expansion material produces makes the pressure in the second ring cavity section 302 increase and acts on the first sliding part 401, thus it is mobile in ring cavity 300 to promote the first sliding part 401.And remove the shutoff of closure part to the first through hole 104, the second ring cavity section 302 is communicated with the first through hole 104.First ring cavity section 301 is communicated with the second through hole 204 with the first through hole 104, therefore when the first through hole 104 is opened, fluid media (medium) in circulation passage 103 can enter annular space through the first through hole 104, first ring cavity section 301 and the second through hole 204 successively, and finally enter reservoir, thus reach by tubing string fluid media (medium) guide enter reservoir to compensate the object of reservoir energy.
As mentioned above, fluid media (medium) can for carrying steam, high temperature water, high-temperature gas, the foam of certain heat.During use, be lowered in the sleeve pipe of Injection Well after the sliding sleeve 10 of the application's embodiment is connected with tubing string, the heat of fluid media (medium) is utilized to heat the thermal expansion material be placed in the second ring cavity section 302, thermal expansion material expands the pressure in increase second ring cavity section 302, promote the first sliding part 401 slide thus open the first through hole 104, fluid media (medium) enters annular space through the first through hole 104, first ring cavity section 301 and the second through hole 204 successively, and finally enter reservoir, thus reach the object compensating reservoir energy.The condition that the sliding sleeve 10 of present embodiment preferably utilizes the heat of the fluid media (medium) that must inject when supplementing reservoir energy to open as it, beam body medium is simplified with the constructing operation of supplementary reservoir energy.In addition, relative to pitching sliding sleeve, cancelling when opening pitching sliding sleeve is the spheroid that the tubing string adapting to different inner diameters throws in different size, only needs the radial dimension of corresponding change joint, the flexibility raising of constructing operation; And be difficult to occur as the problem that pitching sliding sleeve cannot be opened, ensure that beam body medium constructing operation can complete smoothly.
Described first sliding part 401 is connected with described body 200 by the shear pin 500 with predetermined shear strength, and now closure part is in the duty of shutoff first through hole 104.When temperature reaches predetermined value, the thermal expansion material be placed in the second ring cavity section 302 expands and the pressure in the second ring cavity section 302 is increased and acts on the first sliding part 401.When the active force that the pressure in the first ring cavity section 301 gives the first sliding part 401 is greater than the shear strength of shear pin 500, shear pin 7 is cut off, first sliding part 401 is mobile in ring cavity 300, remove the shutoff to the first through hole 104 to closure part, the second ring cavity section 302 is communicated with the first through hole 104.
The sliding sleeve 10 of the application's embodiment under enter in the sleeve pipe process of Injection Well, down-hole pressure acts on described first sliding part 401 by the second through hole 204 and the first ring cavity section 301.When down-hole pressure give described shear pin 500 upward pressure the shear strength being greater than shear pin 500 time, then may when sliding sleeve 10 be not yet lowered into operating position predetermined in sleeve pipe, shear pin 500 is cut off in advance, thus cannot construct normally.In order to prevent the generation of above-mentioned situation, as shown in Figure 5, can arrange shoulder 203 on the inwall of body 200, the first sliding part arranges limiting section 403.When closure part is in the duty of shutoff first through hole 104, limiting section 403 pushes up solid shoulder 203.Under enter in the sleeve pipe process of Injection Well, down-hole pressure gives the shoulder 203 of the first sliding part 401 power upwards by mutually engaging and limiting section 403 acts on body 200, shear pin 500 can not by power effect upwards, thus can prevent it from being cut off in advance in the process.
See also Fig. 1 and Fig. 2, in the application's embodiment, the second sliding part 402, second sliding part 402 that described closure part can comprise energy shutoff first through hole 104 is arranged in fluid passage 103; Second sliding part 402 is connected with the first sliding part 401 by connecting portion 40, and connecting portion is through described first through hole 104; First sliding part 401 is held up solid second sliding part by connecting portion and is slided in fluid passage 103, to make the second shutoff of sliding part releasing to the first through hole 104.
Second sliding part 402 roughly can in circular, the outside dimension of the second circular sliding part 402 and the internal diameter size of body 100 suitable, when the second sliding part 402 so can be made to slide in fluid passage 103, second sliding part 402 preferably can be fitted with the inwall of body 100, avoid producing gap between the second sliding part 402 and body 100, thus the fluid media (medium) generation seepage in fluid passage 103 can be prevented.The cross sectional shape of the second sliding part 402 and body 100 can refer to the cross sectional shape of above-mentioned first sliding part 401 and body 100, does not repeat them here.
As shown in Figure 6, the first sliding part 401 and the second sliding part 402 can integrally formedly manufacture, and now connecting portion 40 is one of the forming the first sliding part 401 and the part of the second sliding part 402 that manufacture.Certainly, the first sliding part 401 and the second sliding part 402 also can be independent mechanism, and namely the first sliding part 401 and the second sliding part 402 manufacture shaping respectively, then both are connected.Concrete second sliding part 402 can be removably connected by connecting portion 40 and the first sliding part 401 as shown in Figure 7, and such as both can be connected by connecting key.First sliding part 401 holds up solid second sliding part 402 by connecting portion 40, thus drives it mobile in fluid passage 103.
Load in ring cavity 300 for convenience of the first sliding part 401, described body 200 comprises the first set body 201 and the second cover body 202 that removably connect, and both are by being threaded; Wherein first set body 201 is near described first ring cavity section 301, and described second cover body 202 is near described second ring cavity section 302.After first sliding part 401 loads ring cavity 300, the second cover body 202 is threaded connection with first set body 201.Described second through hole 20 is arranged on first set body 201.In addition, when the second through hole 204 enters in annular space, directly sleeve pipe is sprayed in order to prevent fluid media (medium), second through hole 204 can be arranged at the bottom of first set body 201, make the direction of the second through hole 201 roughly identical with the longitudinally of ring cavity 300, fluid media (medium) like this, when the first ring cavity section 301 enters annular space, directly can not spray sleeve pipe.
Described body 100 can comprise the first body 101 and the second body 102 that removably connect, wherein said first body 101 is near described first ring cavity section 301, described second body 102 run through near described second ring cavity section 302, first through hole 104 be opened in first body 101 sidewall on.In present embodiment, body 100 can be spliced by two parts and form.Certainly, the quantity that the splicing of the application's embodiment obtains the body section of body 100 is not limited to two, can choose the quantity of suitable body section according to actual needs, realize the independent assortment of body 100.In addition, gap 62 is formed between first body 101 and the second body 102, during described second sliding part 401 shutoff the first through hole 104, the end of described first body 101 plugs in described gap 62, thus the plugging effect of the second sliding part 401 to the first through hole 104 can be ensured, prevent fluid media (medium) seepage.
The basic procedure utilizing the sliding sleeve 10 of present embodiment to carry out beam body medium technique is: be connected with tubing string by the sliding sleeve 10 of present embodiment, first sliding part 401 is fixed on body 200 by shear pin 500, and now the second sliding part 402 is in the duty of shutoff first through hole 104, tubing string is removed predetermined work position in Injection Well sleeve pipe together with sliding sleeve 10 1, makes sliding sleeve 10 corresponding with reservoir, by tubing string beam body medium, the heat of fluid media (medium) heats to the thermal expansion material be placed in the second ring cavity section 302, when temperature reaches predetermined value, thermal expansion material expands, in second ring cavity section 302, pressure increases and acts on the first sliding part 401, when the active force that the pressure in the second ring cavity section 302 gives the first sliding part 401 is greater than the shear strength of shear pin 500, shear pin 500 is cut off, first sliding part 401 is mobile in ring cavity 300, second sliding part 402 moves under the drive of the first sliding part 401 thereupon, second sliding part 402 removes the shutoff to the first through hole 104 gradually, first through hole 104 is opened, fluid media (medium) can successively through the first through hole 104, in the outside that first ring cavity section 301 and the second through hole 204 enter body 200 and ring cavity, and finally enter reservoir, thus reach by fluid media (medium) guide enter reservoir to compensate the object of reservoir energy.
See also Fig. 3 and Fig. 4, in another embodiment of the application, described closure part is provided with third through-hole 304, described third through-hole 304 is communicated with described first ring cavity section 301; When described first sliding part 401 slides into precalculated position in described ring cavity 300, described third through-hole 304 is communicated with described first through hole 401.
In present embodiment, described closure part is a part for the first sliding part 401, and the first sliding part 401 seals with the outer wall of body 100 and contacts, and the closure part therefore as a part for the first sliding part 401 can form shutoff to the first through hole 401.Concrete, as shown in Figure 3, the part 4011 being positioned at the relative below of the first sliding part 401 can be described closure part.The third through-hole 304 that closure part is arranged is communicated with the first ring cavity section 301 by gap 61, when the first sliding part 401 slides into precalculated position in ring cavity 300, blocking and shutoff the first through hole 104 is removed in closure part, and third through-hole 304 is communicated with the first through hole 104, thus the second ring cavity section 302 is communicated with the first through hole 104.Fluid media (medium) in fluid passage 103 like this first through hole 104, third through-hole 304, second ring cavity section 202 and the second through hole 204 through being communicated with successively can enter the outside of body 200, and finally enters reservoir, reaches the object of supplementary reservoir energy.
The basic procedure utilizing the sliding sleeve 10 of present embodiment to carry out beam body medium technique is: be connected with tubing string by the sliding sleeve 10 of present embodiment, first sliding part 401 is fixed on body 200 by shear pin 500, and now closure part is in the duty of shutoff first through hole 104, tubing string is removed predetermined work position in Injection Well sleeve pipe together with sliding sleeve 10 1, makes sliding sleeve 10 corresponding with reservoir, by tubing string beam body medium, the heat of fluid media (medium) heats to the thermal expansion material be placed in the second ring cavity section 302, when temperature reaches predetermined value, thermal expansion material expands, in second ring cavity section 302, pressure increases and acts on the first sliding part 401, when the active force that the pressure in the first ring cavity section 901 gives sliding part 16 is greater than the shear strength of shear pin 500, shear pin 500 is cut off, first sliding part 16 is mobile in ring cavity 300, be communicated with to third through-hole 304 with the first through hole 104, fluid media (medium) can successively through the first through hole 104, third through-hole 304, in the outside that first ring cavity section 301 and the second through hole 204 enter body 200 and ring cavity, and finally enter reservoir, thus reach by tubing string fluid media (medium) guide enter reservoir to compensate the object of reservoir energy.
Because the application's structure is comparatively complicated, wherein multiple parts such as body 100, body 200, ring cavity 300 is assembled by two structures or spliced to get; In order to know the relation between display unit and assembling thereof or splicing construction, in present specification accompanying drawing, use braces that the mark of subordinate relation has been carried out in parts and assembling or splicing construction.But it should be noted that, the content that the braces in Reference numeral comprises is only limitted to the content at its two ends, the content of braces inside is not its subject matter.
Refer to Fig. 8, present invention also provides a kind of layering injection string utilizing above-mentioned sliding sleeve, described layering injection string comprises: the tubing string 23 that can be lowered into precalculated position in the sleeve pipe 26 of Injection Well, form annular space 27 between described tubing string 23 and described sleeve pipe 26, described tubing string 23 has when being lowered in sleeve pipe 26 near the first end of described steam injection well well head and the second end away from described steam injection well well head.The first packer 29 be connected with described tubing string 23, described first packer 29 is between described first end and described second end.The second packer 25 be connected with described tubing string 23, described second packer 25 is between described first packer 29 and described second end.Sliding sleeve 10 as described in the embodiment, described sliding sleeve 10 is connected with described tubing string 23, and it is between described first packer 29 and described second packer 25.
In present embodiment, tubing string 23 together with the packer that it connects and after sliding sleeve is lowered into the sleeve pipe 26 of Injection Well, can first by two packer settings on sleeve pipe 26.Can according to actual requirement of engineering, choose the model of any appropriate, size and set the packer of principle.Such as, can, for the packer set by pressure, can, for the packer set by gravity mode, can also be also thermal packer.
In present embodiment, first packer 29 can for the packer set by gravity mode, second packer 25 can be thermal packer, after tubing string 23 is lowered into the sleeve pipe 26 of Injection Well together with the packer that it connects and sliding sleeve, first the first packer 29 can be set, then by tubing string 23 beam body medium, fluid media (medium) enters bottom reservoir by the second end of tubing string 23; And the first packer 25 can set under the effect of fluid media (medium) heat in the process, sliding sleeve 10 is opened afterwards, and fluid media (medium) enters top reservoir by sliding sleeve 10, thus can carry out hierarchical supplementary energy.
In another embodiment, first packer 29 can for the packer set by pressure, second packer 25 can be thermal packer, now, can at the second end connecting valve seat 35 of tubing string 23, can throw in spheroid to described valve seat 35 by described tubing string 23, described spheroid to set on described valve seat 35 with tubing string described in packing 23 and described annular space 27, in tubing string 23, now suppresses highly pressurised liquid the first packer 29 is set.Reservoir is carried out for making fluid media (medium), pressure reduction sliding sleeve 31 can be connected with on described tubing string 23, described pressure reduction sliding sleeve 31 is between described first packer 29 and described second end, and described pressure reduction sliding sleeve 31 can be opened when reaching predetermined value to be communicated with described tubing string 23 and described annular space 27 by the pressure in described tubing string 23.After completing the setting of the first packer 29, continue to suppress highly pressurised liquid, open pressure reduction sliding sleeve 31, highly pressurised liquid is discharged into bottom reservoir by described pressure reduction sliding sleeve 31.Now, tubing string 23 does not play pressure, then carries out beam body medium, and the second packer 25 is set, and sliding sleeve 10 is opened afterwards, and fluid media (medium) enters top reservoir by sliding sleeve 10, thus can carry out hierarchical supplementary energy.
The layering injection string of the application's embodiment is described for two-layer reservoir, but it should be noted that, the utilization scene of the layering injection string of the application's embodiment is not limited to the situation of two-layer reservoir; , there is not sequencing relation between the two in " bottom reservoir " described in the application's embodiment, " top reservoir ", " the first packer ", " the second packer " just relative point.Therefore, should be appreciated that " bottom ", " top " are the relative positions of wherein two reservoirs, and the quantity of reservoir can be more than three in Practical Project when fluid media (medium) is injected in layering; " first ", " second " are the relative numberings of packer, and the quantity that the quantity of packer corresponds to reservoir can be more than three.
The foregoing is only several embodiments of the application, those skilled in the art can carry out various change or modification to the embodiment of the present invention according to content disclosed in application documents and not depart from the spirit and scope of the present invention.
Claims (10)
1. a sliding sleeve, is characterized in that, comprising:
The body that lengthwise extends, described body offers the fluid passage for fluid circulation along its lengthwise bearing of trend, and the sidewall running through described body offers the first through hole;
Be sheathed on described external body, be formed with ring cavity between described body and described body, the wall of described body be provided with the second through hole;
Be arranged at the first sliding part in described ring cavity, described first sliding part has closure part, the first through hole described in the energy shutoff of described closure part; Described ring cavity is divided into the first ring cavity section and the second ring cavity section by described first sliding part, wherein:
Described first ring cavity section is communicated with described second through hole;
The accommodating thermal expansion material of described second ring cavity Duan Zhongneng, described thermal expansion material can expand when temperature reaches predetermined value to increase the pressure in described second ring cavity section, thus promote described first sliding part and slide in described ring cavity, thus remove the shutoff of described closure part to described first through hole, be communicated with described fluid passage to make described first ring cavity section.
2. sliding sleeve as claimed in claim 1, is characterized in that: described closure part is the second sliding part of the first through hole described in energy shutoff, and described second sliding part is arranged in described fluid passage; Described second sliding part is connected with described first sliding part by connecting portion, and described connecting portion is through described first through hole; Described first sliding part is held up admittedly described second sliding part by described connecting portion and is slided in described fluid passage, to make described second shutoff of sliding part releasing to described first through hole.
3. sliding sleeve as claimed in claim 1, it is characterized in that: described closure part is provided with third through-hole, described third through-hole is communicated with described first ring cavity section; Described first sliding part slides into precalculated position in described ring cavity, and described third through-hole is communicated with described first through hole, and the shutoff to described first through hole is removed in described closure part.
4. sliding sleeve as claimed in claim 1, is characterized in that: described first sliding part is connected with described body by the shear pin with predetermined shear strength.
5. sliding sleeve as claimed in claim 4, it is characterized in that: the inwall of described body is provided with shoulder, described first sliding part is provided with limiting section; Described in the shutoff of described closure part during the first through hole, the solid described shoulder in described limiting section top.
6. sliding sleeve as claimed in claim 2, is characterized in that: described body comprises the first body and the second body that removably connect; Wherein said first body near described first ring cavity section, described second body near described second ring cavity section, described first through hole run through be opened in described first body sidewall on; Be formed with gap between described first body and described second body, described in described second sliding part shutoff during the first through hole, the end of described second sliding part is inserted in described gap.
7. sliding sleeve as claimed in claim 2, is characterized in that: described body comprises the first set body and the second cover body that removably connect; Wherein said first set body is near described first ring cavity section, and described second cover body is near described second ring cavity section; Described second through hole is arranged on described first set body.
8. sliding sleeve as claimed in claim 7, is characterized in that: the direction of described second through hole is roughly identical with the lengthwise bearing of trend of described ring cavity.
9. a layering injection string, is characterized in that, comprising:
Can be lowered into the tubing string in precalculated position in the sleeve pipe of Injection Well, form annular space between described tubing string and described sleeve pipe, described tubing string has when being lowered in sleeve pipe near the first end of described Injection Well well head and the second end away from described Injection Well well head;
The first packer be connected with described tubing string, described first packer is between described first end and described second end;
The second packer be connected with described tubing string, described second packer is between described first packer and described second end;
Sliding sleeve as described in one of the claims, described sliding sleeve is connected with described tubing string, and it is between described first packer and described second packer.
10. tubing string as claimed in claim 9, is characterized in that, comprising:
Described second end is connected with valve seat, and can throw in spheroid to described valve seat by described tubing string, described spheroid can set on described valve seat with tubing string described in packing and described annular space;
The pressure reduction sliding sleeve be connected with described tubing string, described pressure reduction sliding sleeve is between described first packer and described second end, and described pressure reduction sliding sleeve can be opened to be communicated with described tubing string and described annular space when reaching predetermined value by the pressure in described tubing string.
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| CN201510665392.8A CN105275430B (en) | 2015-10-15 | 2015-10-15 | Sliding sleeve and layered injection string |
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| CN201510665392.8A CN105275430B (en) | 2015-10-15 | 2015-10-15 | Sliding sleeve and layered injection string |
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| CN105275430B CN105275430B (en) | 2018-07-10 |
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| CN105275430B (en) | 2018-07-10 |
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