CN204827334U - But packer - switch screen pipe composite set - Google Patents
But packer - switch screen pipe composite set Download PDFInfo
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- CN204827334U CN204827334U CN201520301026.XU CN201520301026U CN204827334U CN 204827334 U CN204827334 U CN 204827334U CN 201520301026 U CN201520301026 U CN 201520301026U CN 204827334 U CN204827334 U CN 204827334U
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- sliding sleeve
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Abstract
The utility model provides a but packer - switch screen pipe composite set, include: but pass crimping head, packer switch screen pipe unit, lead the crimping head, pass to press and manage and the leading pipeline of pressing. Wherein but switch screen pipe unit includes: at least one can close formula screen pipe subelement may open screen pipe subelement. The aforesaid can be closed formula screen pipe subelement and/or can be included by open screen pipe subelement: inner chamber and slidable sliding sleeve, top connection, lower clutch have. Set up the first water conservancy diversion passageway of intercommunication inner chamber on the lateral wall of sliding sleeve. The top connection can link on the sliding sleeve through cutting the round pin, just is equipped with the second water conservancy diversion passageway that ability and first water conservancy diversion passageway are linked together. It can close formula screen pipe subelement and close and to open by open screen pipe subelement to adopt the annular space pressurization to make. Utilize this but packer - switch screen pipe composite set, can the flow control business turn over try the switching conversion that the passageway was produced to the oil pipe post, the advantage of have easy operation, easily implementing without the test valve.
Description
Technical field
The utility model relates to Oil/gas Well Oil Test Technology field, is specifically related to a kind of packer-can switch screen casing combination unit.
Background technology
Chinese utility model patent 00250505.3 discloses a kind of oil tube transmission perforation negative pressure device, the negative pressure cavity communicated with oil pipe is provided with in it, the below of described negative pressure cavity is provided with pressurizing chamber, the middle part of negative pressure cavity is provided with vertical pressure tube, the bottom of described pressure tube is stretched in pressurizing chamber, and be communicated with pressurizing chamber, the top of pressure tube is provided with the pressurization passageway communicated with device outside, described pressure tube is communicated with pressurization passageway, be provided with bottom negative pressure cavity and negative pressure cavity and pressurizing chamber are sealed isolated piston, described piston seal is socketed on pressure tube, piston barrel has the negative pressure through-hole be communicated with negative pressure cavity, the corresponding negative pressure hole being provided with the negative pressure through-hole on the piston after moving with pressurized and being connected on the device case of negative pressure cavity.
The advantage of above-mentioned utility model is, by applied pressure by annulus to predetermined pressure, promote piston moves, the negative pressure through-hole on piston can be made to be communicated with the negative pressure hole on negative pressure cavity housing, realize first setting up negative pressure, then light a fire, operation is simple, cost is low, can straight well, high angle hole, horizontal well and perforation well use pressurization ignition conditions under, the negative pressure oil tube transmission perforation technique of realizing ideal.
The deficiency of said apparatus is: (1) opening and closing hole translative mode is single, causes being of limited application.At the negative pressure hole of device and the disconnected closed pore state lower going-into-well of negative pressure through-hole, the conversion of the single mode from closed pore to perforate can only be completed; (2) the down-hole repeatedly opening and closing conversion that perforate state enters well, down-hole first closed pore, again perforate can not be realized; (3) mode of limiting retainer ring and inner walls being established corresponding spacing chuck is established in employing on piston, prevent piston reset and keep negative pressure state, complex structure, add risk of failure, and piston and collar are difficult to bear in oil pipe the huge lower thrust produced when injecting operation, be difficult to adapt to Large-scale Acid Fracturing construction.
Utility model content
In order to overcome the above-mentioned defect of prior art, technical problem to be solved in the utility model is to provide a kind of packer-can switch screen casing combination unit, utilize packer of the present utility model-can switch screen casing combination unit composition formation testing tubing string, the opening and closing of the production passage of formation testing tubing string can be passed in and out without testing valve and controllable flow body, structure is simple, cost is low, applied widely.
Above-mentioned purpose of the present utility model can adopt following technical proposal to realize:
A kind of packer-can switch screen casing combination unit, it is in formation testing tubing string, described formation testing tubing string has the front end of close oil well mouth and the rear end away from described oil well mouth, and described formation testing tubing string comprises: the first subsystem connected in turn to the back-end from front end, packer-and can switch screen casing combination unit and the second subsystem;
It is characterized in that, described packer-can comprise by switch screen casing combination unit: pressure-transmitting joint, packer, can switch screen casing unit, pressure guiding joint, the pressure tube of hollow and leading pressure pipeline;
Described pressure-transmitting joint, packer, can switch screen casing unit and pressure guiding joint from front end sequential concatenation to the back-end, described pressure guiding joint is provided with pressure guiding joint inner chamber, described pressure tube is connected with pressure-transmitting joint, and from packer, can pass through in the middle of switch screen casing unit, pressure guiding joint inner chamber is stretched in the rear end of described pressure tube;
Describedly can produce opening and closing for the production passage making fluid and pass in and out formation testing tubing string by switch screen casing unit, describedly can be provided with and to be no less than one for connecting the first port of described leading pressure pipeline by switch screen casing unit;
Described pressure tube front end is provided with and described packer-can the pressurization passageway that communicates of switch screen casing combination unit outside, described pressure tube is communicated with pressurization passageway, described pressure tube also with described pressure guiding joint inner space, the outer wall of described pressure guiding joint is provided with pressure guiding pipeline port, described pressure guiding pipeline port and described pressure guiding joint inner space;
The two ends of described leading pressure pipeline be connected respectively to described pressure guiding pipeline port and described can the first port of switch screen casing unit, its for the pressure of described pressurization passageway is delivered to described can the first port of switch screen casing unit;
Describedly can form the second annular space between switch screen casing unit and described pressure tube, described pressure guiding joint inner chamber is communicated with described pressurization passageway, sealing blocking is provided with between described second annular space and described pressure guiding joint inner chamber, described sealing blocking when down-hole and described pressure guiding joint there is not relative motion, isolate for making described second annular space and described pressure guiding joint inner chamber.
Preferably, describedly can to comprise by switch screen casing unit:
Unit one: what connect in turn to the back-end from front end can open type screen casing subelement and can close formula screen casing subelement;
Or unit two: the closed formula screen casing subelement connected in turn to the back-end from front end and can open type screen casing subelement;
Or unit three: formula screen casing subelement can be closed;
Or unit four: can open type screen casing subelement.
Preferably, describedly in switch screen casing unit one, can be provided with the first port by open type screen casing subelement near the described of front end, the described formula screen casing subelement that closes near rear end is provided with the first port and the second port that interconnect; Described can in switch screen casing unit two, the described formula screen casing subelement that closes near front end is provided with the first port, can be provided with the first port and the second port that interconnect by open type screen casing subelement near the described of rear end; Above-mentioned can switch screen casing unit one and can in switch screen casing unit two, the first adjoining port and the second port adopt branch's pressure guiding pipeline to be communicated with.
Preferably, the described formula screen casing subelement that closes comprises:
Have the sliding sleeve of inner chamber, described sliding sleeve can slide along described front end to described rear end, the outer wall of described sliding sleeve offers the step surface with the first shoulder, the sidewall of described sliding sleeve offers the first flow-guiding channel being communicated with described sliding sleeve inner chamber;
Top connection, it is set on the front end of described sliding sleeve, is connected with sliding sleeve by cutting off, and described top connection offers second flow-guiding channel that can be connected with described first flow-guiding channel;
Lower contact, it is set in the rear end of described sliding sleeve and is fixedly connected with described top connection, the first annular space is formed between described lower contact and described sliding sleeve, described first annular space is connected with the described step surface with the first shoulder, there is outside described sliding sleeve the seal of the first annular space rear end described in energy shutoff, described lower contact offers the first port, described first port is communicated with described first ring Kongxiang;
Described sliding sleeve has at least two operating positions, and when described sliding sleeve is positioned at the first operating position, cuts off and be connected with described top connection described in described sliding sleeve passes through, described first flow-guiding channel is connected with described second flow-guiding channel; When described sliding sleeve is positioned at the second operating position, described in cut off and cut off, described sliding sleeve slides to described rear end, and described first flow-guiding channel and described second flow-guiding channel are staggered.
Preferably, describedly can to comprise by open type screen casing subelement:
Have the sliding sleeve of inner chamber, described sliding sleeve can slide along described front end to described rear end, the outer wall of described sliding sleeve offers the step surface with the first shoulder, the sidewall of described sliding sleeve offers the first flow-guiding channel being communicated with described sliding sleeve inner chamber;
Top connection, it is set on the front end of described sliding sleeve, is connected with sliding sleeve by cutting off, and described top connection offers second flow-guiding channel that can be connected with described first flow-guiding channel;
Lower contact, it is set in the rear end of described sliding sleeve and is fixedly connected with described top connection, the first annular space is formed between described lower contact and described sliding sleeve, described first annular space is connected with the described step surface with the first shoulder, there is outside described sliding sleeve the seal of the first annular space rear end described in energy shutoff, described lower contact offers the first port, described first port is communicated with described first ring Kongxiang;
Described sliding sleeve has at least two operating positions, when described sliding sleeve is positioned at the first operating position, cuts off and be connected with described top connection described in described sliding sleeve passes through, and described first flow-guiding channel and described second flow-guiding channel are staggered; When described sliding sleeve is positioned at the second operating position, described in cut off and cut off, described sliding sleeve slides to described rear end, and described first flow-guiding channel is connected with described second flow-guiding channel.
Preferably, the described formula screen casing subelement and/or can in open type screen casing subelement of closing, the outer wall of described sliding sleeve is provided with the second shoulder, described second shoulder place is provided with beam, the inwall of described lower contact is provided with the 3rd shoulder, when described sliding sleeve slides to described rear end, described second shoulder and described 3rd shoulder close gradually, until described second shoulder and described beam and described 3rd shoulder abut against.
Preferably, the described formula screen casing subelement and/or can in open type screen casing subelement of closing, in the outside of described sliding sleeve, the first described flow-guiding channel and described cut off between be provided with at least one seal.
Preferably, the described formula screen casing subelement and/or can in open type screen casing subelement of closing, in the outside of described sliding sleeve, the rear end of described sliding sleeve and described cut off between be provided with at least one seal.
The utility model has the advantages that: pass through applied pressure by annulus, make described can close formula screen casing subelement and/or can slide to the back-end from front end by sliding sleeve in open type screen casing subelement, and then make to close or open by switch screen casing unit, and then the fluid of the oil jacket annular space of isolation or connection packer far-end enters the production passage of formation testing tubing string.The utility model can realize the opening and closing conversion of at least Three models: (1) pattern one: the repeatedly opening and closing conversion entering well, down-hole first closed pore, again perforate from perforate state; (2) pattern two: the opening and closing conversion entering well, down-hole closed pore from perforate state; (3) pattern three: the opening and closing conversion entering well, down-hole perforate from closed pore state.The utility model can meet formation testing tubing string driving a well, the requirement of the different operation such as closing well, negative pressure open flow.
Compared with prior art, the utility model overcomes the problems such as prior art opening and closing hole translative mode is single, expands range of application.The utility model has simple, easy to operate, the safe and reliable feature of structure.
Accompanying drawing explanation
Accompanying drawing described here only for task of explanation, and is not intended to limit the utility model scope of disclosure by any way.In addition, the shape of each parts in figure and proportional sizes etc. are only schematic, for helping understanding of the present utility model, are not the shape and the proportional sizes that specifically limit each parts of the utility model.Those skilled in the art, under instruction of the present utility model, can select various possible shape and proportional sizes to implement the utility model as the case may be.
Fig. 1 is packer of the present utility model-can the structural representation of formation testing tubing string of switch screen casing combination unit first embodiment;
Fig. 2 is packer of the present utility model-can the structural representation of switch screen casing combination unit first embodiment;
Fig. 3 is packer of the present utility model-can the structural representation of switch screen casing combination unit second embodiment;
Fig. 4 is packer of the present utility model-can the structural representation of switch screen casing combination unit the 3rd embodiment;
Fig. 5 is packer of the present utility model-can the structural representation of switch screen casing combination unit the 4th embodiment.
Detailed description of the invention
By reference to the accompanying drawings with the description of the utility model detailed description of the invention, can clearly understand details of the present utility model.But detailed description of the invention of the present utility model described here, only for explaining the purpose of this utility model, and can not to be understood as by any way be to restriction of the present utility model.Under instruction of the present utility model, technician can conceive based on distortion possible arbitrarily of the present utility model, and these all should be regarded as belonging to scope of the present utility model.
As Figure 1-5, the utility model provides four embodiments, and four embodiments have following general character:
Please again see accompanying drawing 2-5, formula screen casing subelement 4 can be closed and comprise: there is the sliding sleeve 43 of inner chamber, top connection 41, lower contact 49.Sliding sleeve 43 can slide to the back-end along front end, the outer wall of sliding sleeve 43 offers the step surface 433 with the first shoulder 432, the sidewall of sliding sleeve 43 offers the first flow-guiding channel 431 of communication with cavity; Top connection 41 is set on the front end of sliding sleeve 43, is connected with sliding sleeve 43 by cutting off 46, top connection 41 offers second flow-guiding channel 411 that can be connected with above-mentioned first flow-guiding channel 431.
Lower contact 49 is set in the rear end of sliding sleeve 43 and is fixedly connected with top connection 41, the first annular space 490 is formed between lower contact 49 and sliding sleeve 43, first annular space 490 is connected with the step surface 433 with the first shoulder 432, there is outside sliding sleeve 43 seal 47 of energy shutoff first annular space 490 rear end, lower contact 49 offers the first port 491 be connected with the first annular space 490.
Sliding sleeve 43 has at least two operating positions, and when sliding sleeve 43 is positioned at the first operating position, sliding sleeve 43 is connected with top connection 41 by cutting off 46, and the first flow-guiding channel 431 is connected with the second flow-guiding channel 411; When sliding sleeve 43 is positioned at the second operating position, cut off 46 and cut off, sliding sleeve 43 slides to the back-end, and the first flow-guiding channel 431 and the second flow-guiding channel 411 are staggered.
Please again see accompanying drawing 2-5, can comprise by open type screen casing subelement 3: there is the sliding sleeve 33 of inner chamber, top connection 31, lower contact 39.Sliding sleeve 33 can slide to the back-end along front end, the outer wall of sliding sleeve 33 offers the step surface 333 with the first shoulder 332, the sidewall of sliding sleeve 33 offers the first flow-guiding channel 331 of communication with cavity; Top connection 31 is set on the front end of sliding sleeve 33, is connected with sliding sleeve 33 by cutting off 36, top connection 31 offers second flow-guiding channel 311 that can be connected with the first flow-guiding channel 331.
Lower contact 39 is set in the rear end of sliding sleeve 33 and is fixedly connected with top connection 31, the first annular space 390 is formed between lower contact 39 and sliding sleeve 33, first annular space 390 is connected with the step surface 333 with the first shoulder 332, there is outside sliding sleeve 33 seal 37 of energy shutoff first annular space 390 rear end, lower contact 39 offers the first port 391, first port 391 to be connected with the first annular space 390.
Sliding sleeve 33 has at least two operating positions, and when sliding sleeve 33 is positioned at the first operating position, sliding sleeve 33 is connected with top connection 31 by cutting off 36, and the first flow-guiding channel 331 and the second flow-guiding channel 311 are staggered; When sliding sleeve 33 is positioned at the second operating position, cut off 36 and cut off, sliding sleeve 33 slides to the back-end, and the first flow-guiding channel 331 is connected with the second flow-guiding channel 311.
Be described in detail below in conjunction with preferred first embodiment.
Please again see accompanying drawing 2, packer-can comprise by switch screen casing combination unit 1: pressure-transmitting joint 2, packer 7, can switch screen casing unit 340, pressure guiding joint 5, the pressure tube 6 of hollow and leading pressure pipeline 8; Wherein: pressure-transmitting joint 2, packer 7, can switch screen casing unit 340 and pressure guiding joint 5 from front end sequential concatenation to the back-end, pressure guiding joint 5 is provided with pressure guiding joint inner chamber 52, pressure tube 6 is connected with pressure-transmitting joint 2, and from packer 7, can pass through in the middle of switch screen casing unit 340, pressure guiding joint inner chamber 52 is stretched in the rear end of pressure tube 6.
Pressure tube 6 front end is provided with and packer-can the pressurization passageway 21 that communicates of switch screen casing combination unit 1 outside, pressure tube 6 is communicated with pressurization passageway 21, pressure tube 6 is also communicated with pressure guiding joint inner chamber 52, the outer wall of pressure guiding joint 5 is provided with pressure guiding pipeline port 51, and pressure guiding pipeline port 51 is communicated with pressure guiding joint inner chamber 52.
The second annular space 67 can be formed between switch screen casing unit 340 and pressure tube 6, pressure guiding joint inner chamber 52 is communicated with pressurization passageway 21, sealing blocking 534 is provided with between second annular space 67 and pressure guiding joint inner chamber 52, sealing blocking 534 when down-hole and pressure guiding joint 5 there is not relative motion, isolate for making the second annular space 67 and pressure guiding joint inner chamber 52.The production passage 22 of the pressure-transmitting joint 2 be connected with the second annular space 67 is provided with in pressure-transmitting joint 2.
As shown in Figure 2, in preferred first embodiment, can comprise by switch screen casing unit 340: what be threaded successively from front end to rear end can open type screen casing subelement 3 and can close formula screen casing subelement 4, the lower contact 49 can closing formula screen casing subelement 4 is also provided with the second port 492 be connected with the first annular space 490, branch's pressure guiding pipeline 9 two ends be connected respectively to can open type screen casing subelement 3 the first port 391 and the second port 492 of formula screen casing subelement 4 can be closed.
The two ends of leading pressure pipeline 8 are connected respectively to pressure guiding pipeline port 51 and can the first port 491 of switch screen casing unit 340, and it can the first port 491 of switch screen casing unit unit 340 for being delivered to by the pressure of pressurization passageway 21.
Above-mentioned packer-can switch screen casing combination unit 1 concrete using method as follows:
Packer-can switch screen casing combination unit 1 be a kind of device producing passage generation opening and closing conversion for downhole fluid turnover formation testing tubing string 100.This device adopts open mode to enter well, by the mode of applied pressure by annulus, when not being equipped with testing valve, can realizing the first closedown of the production passage of formation testing tubing string 100, opening.Its concrete operations mode is as follows:
Step one, when needs closedown can close formula screen casing subelement 4, the high pressure liquid of pressure P 0 is squeezed into from oil jacket annular space, high pressure liquid is made to enter pressure tube 6 from pressurization passageway 21, arrive pressure guiding joint inner chamber 52, leading pressure pipeline 8 is entered again from pressure guiding pipeline port 51, first annular space 490 that can close formula screen casing subelement 4 is entered again from first port 491 that can close formula screen casing subelement 4, hydraulic action is at sliding sleeve 43 step surface 433 place, when the pressure of high pressure liquid constantly increases, cutting off of fixing sliding sleeve 43 46 can be cut off by pressure, sliding sleeve 43 just can depart from the constraint of top connection 41, slide to the back-end under the effect of the pressure, and the air in compressed air cell 493, until the second shoulder 434 of sliding sleeve 43 abuts against rear stopping with the 3rd shoulder 494 of beam 48 and lower contact 49, now, the first flow-guiding channel 431 on sliding sleeve 43 is staggered with the second flow-guiding channel 411 in top connection 41, formula screen casing subelement 4 can be closed and complete closedown.
Step 2, when needs open can open type screen casing subelement 3 time, the high pressure liquid of pressure P 1 is squeezed into from oil jacket annular space, high pressure liquid is made to enter pressure tube 6 from pressurization passageway 21, arrive pressure guiding joint inner chamber 52, leading pressure pipeline 8 is entered again from pressure guiding pipeline port 51, through can the first port 491 of open type screen casing subelement 4, second port 492, enter branch's pressure guiding pipeline 9, entering can the first port 391 of open type screen casing subelement 3 again, and then enter can the first annular space 390 of open type screen casing subelement 3, hydraulic action is at sliding sleeve 33 step surface 333 place, when the pressure of high pressure liquid constantly increases, cutting off of fixing sliding sleeve 33 36 can be cut off by pressure, sliding sleeve 33 just can depart from the constraint of top connection 31, slide to the back-end under the effect of the pressure, and air in compressed air cell 393, until the second shoulder 334 of sliding sleeve 33 abuts against rear stopping with the 3rd shoulder 394 of beam 38 and lower contact 39, now, the first flow-guiding channel 331 on sliding sleeve 33 is connected with the second flow-guiding channel 311 in top connection 31, can complete and open by open type screen casing subelement 3.
When use comprise can close formula screen casing subelement 4, can open type screen casing subelement 3 can switch screen casing unit 340 time, at packer-can after switch screen casing combination unit 1 enters well with formation testing tubing string 100, when needs operation can switch screen casing unit 1 time, first perform step one, perform step 2 again, and pressure P 1 > P0, to realize the production passage of first closing, opening again formation testing tubing string 100.
Adopt this packer-can the using method of formation testing tubing string 100 of switch screen casing combination unit 1 as follows:
Please again see accompanying drawing 1, formation testing tubing string 100 connects the first subsystem 10, packer-can switch screen casing combination unit 1 and the second subsystem 11 to the back-end in turn from front end.This first subsystem 10 comprise the oil pipe 101 connected in turn, the negative pressure valve 102 can broken by caber, circulation kill-job and close tubing string safe circulating valve 103, for the bumper jar 104 of tubing string jarring releasing, for carrying manometric manometer 105, be convenient to the hydraulic pressure bypass valve 106 of overcurrent when packer removes, be convenient to lose manual safety joint 107 when tubing string meets card; This second subsystem 11 comprises the manometer 110 and pipe shoe 111 that connect in turn.
Design respectively can close formula screen casing subelement 4, can operating pressure P0, P1 and P2 (wherein: P0 < P1 < P2) of open type screen casing subelement 3 and safe circulating valve 103, enter well after being assembled by formation testing tubing string 100.Pour into fluid cushion in going down process, formation testing tubing string 100 behind precalculated position, set packer 7, caber breaks negative pressure valve 102, is now the state of driving a well, the flowing test before can reservoir reconstruction being carried out, ask produce and sampling; Drive a well after terminating, squeeze into the high pressure liquid of pressure P 0 from oil jacket annular space, close packer-can the formula of the closing screen casing subelement 4 of switch screen casing combination unit 1, be now closing well state, can pressure buildup test be carried out; When pressure buildup test terminate, need reservoir reconstruction time, squeeze into the high pressure liquid of pressure P 1 from oil jacket annular space, completing can the opening of open type screen casing subelement 3, and is now the state of driving a well, can carries out reservoir reconstruction and improved discharge opeing operation; When needs carry out improved pressure buildup test, annular space squeezes into the high pressure liquid of pressure P 2, open the circulation canal of safe circulating valve 103, close the formation testing tubing string 100 of safe circulating valve 103 rear end simultaneously, closing well again under completed well, be now closing well state, can improved pressure buildup test be carried out.After whole operation, deblocking, well-flushing or/and kill-job, lift pipe string.
Below in conjunction with Fig. 3, preferred second embodiment is introduced.
Refer to Fig. 3, in preferred second embodiment, packer-can comprise by switch screen casing combination unit 1B: pressure-transmitting joint 2, packer 7, can switch screen casing unit 340B, pressure guiding joint 5, the pressure tube 6 of hollow and leading pressure pipeline 8; Wherein: pressure-transmitting joint 2, packer 7, can switch screen casing unit 340B and pressure guiding joint 5 from front end sequential concatenation to the back-end, pressure guiding joint 5 is provided with pressure guiding joint inner chamber 52, pressure tube 6 is connected with pressure-transmitting joint 2, and from packer 7, can pass through in the middle of switch screen casing unit 340B, pressure guiding joint inner chamber 52 is stretched in the rear end of pressure tube 6;
Refer to as Figure 2-3, the difference of the second embodiment and aforementioned first embodiment is: what the second embodiment comprised can comprise by switch screen casing unit 340B:
The closed formula screen casing subelement 4 be threaded successively from front end to rear end and can open type screen casing subelement 3, the outer wall of closed formula screen casing subelement 4 lower contact 49 of front end is provided with the first port 491, rear end can be provided with the first port 391 and the second port 392 be connected with first annular space 390 that can close formula screen casing subelement 4 by open type screen casing subelement 3 lower contact 39 outer wall; Branch's pressure guiding pipeline 9 two ends are connected respectively to first port 491 that can close formula screen casing subelement 4 and can the second port 392 of open type screen casing subelement 3, and the two ends of leading pressure pipeline 8 are connected respectively to pressure guiding pipeline port 51 and can the first port 391 of open type screen casing subelement 3.
Packer-can other structure of switch screen casing combination unit 1B, principle and concrete using method thereof with reference to the first embodiment.
Below in conjunction with Fig. 4, preferred 3rd embodiment is introduced.
Refer to accompanying drawing 4, in preferred 3rd embodiment.Packer-can switch screen casing combination unit 1C, comprising: pressure-transmitting joint 2, packer 7, can switch screen casing unit 340C, pressure guiding joint 5, pressure tube 6 and leading pressure pipeline 8; Wherein: pressure-transmitting joint 2, packer 7, can switch screen casing unit 340C and pressure guiding joint 5 from front end sequential concatenation to the back-end, pressure guiding joint 5 is provided with pressure guiding joint inner chamber 52, pressure tube 6 is connected with pressure-transmitting joint 2, and from packer 7, can pass through in the middle of switch screen casing unit 340C, pressure guiding joint inner chamber 52 is stretched in the rear end of pressure tube 6;
Pressure tube 6 front end is provided with and packer-can the pressurization passageway 21 that communicates of switch screen casing combination unit 1C outside, pressure tube 6 is communicated with pressurization passageway 21, pressure tube 6 is also communicated with pressure guiding joint inner chamber 52, the outer wall of pressure guiding joint 5 is provided with pressure guiding pipeline port 51, and pressure guiding pipeline port 51 is communicated with pressure guiding joint inner chamber 52;
Can comprise by switch screen casing unit 340C: the closed formula screen casing subelement 4 being provided with the first port 491; The two ends of leading pressure pipeline 8 are connected respectively to pressure guiding pipeline port 51 and can first port 491 of switch screen casing unit 340C, and it can first port 491 of switch screen casing unit unit 340C for being delivered to by the pressure of pressurization passageway 21.
Packer-can other structure of switch screen casing combination unit 1C, principle and concrete using method thereof with reference to the first embodiment.
Below in conjunction with Fig. 5, preferred 4th embodiment is described.
Refer to accompanying drawing 5, in preferred 4th embodiment.Packer-can switch screen casing combination unit 1D, comprising: pressure-transmitting joint 2, packer 7, can switch screen casing unit 340D, pressure guiding joint 5, pressure tube 6 and leading pressure pipeline 8; Wherein: pressure-transmitting joint 2, packer 7, can switch screen casing unit 340D and pressure guiding joint 5 from front end sequential concatenation to the back-end, pressure guiding joint 5 is provided with pressure guiding joint inner chamber 52, pressure tube 6 is connected with pressure-transmitting joint 2, and from packer 7, can pass through in the middle of switch screen casing unit 340C, pressure guiding joint inner chamber 52 is stretched in the rear end of pressure tube 6;
Can comprise by switch screen casing unit 340D: what be provided with the first port 391 can open type screen casing subelement 3; The two ends of leading pressure pipeline 8 are connected respectively to pressure guiding pipeline port 51 and can first port 491 of switch screen casing unit 340D, and it can first port 391 of switch screen casing unit unit 340D for being delivered to by the pressure of pressurization passageway 21.
Packer-can other structure of switch screen casing combination unit 1D, principle and concrete using method thereof with reference to the first embodiment.
Please refer to accompanying drawing 2-5, preferably, in above-mentioned first, second, third and fourth embodiment, eachly close in formula screen casing subelement 4, in the outside of sliding sleeve 43, be provided with between the front end of sliding sleeve 43 and the first flow-guiding channel 431 of sliding sleeve 43 and be at least provided with two seals 42,42a, first flow-guiding channel 431 and be provided with at least one seal 42b between cutting off 46, the rear end of sliding sleeve 43 and be provided with at least two seal 42c, 47 between cutting off 46, and the identical the best of the outside dimension of seal 42,42a, 42b, 42c.In addition, between top connection 41 and lower contact 49, seal 45 is also provided with.
Preferably, in above-mentioned first, second, third and fourth embodiment, each can in open type screen casing subelement 3, in the outside of sliding sleeve 33, first flow-guiding channel 331 and be provided with at least two seals 32a, 32b between cutting off 36, the rear end of sliding sleeve 33 and be provided with at least two seal 32c, 37 between cutting off 36, and identical the best of outside dimension of sealing 32a, 32b, 32c.Seal 35 is also provided with between top connection 31 and lower contact 39.
In above-mentioned first, second, and third embodiment, the outside dimension of seal 42,42a, 42b, 42c is less than the outside dimension of seal 47, is provided with air chamber 493 between above-mentioned seal 47 and seal 42c; The outside dimension of sealing 32a, 32b, 32c is less than the outside dimension of seal 37, is provided with air chamber 393, is provided with air chamber 493 between seal 47 and seal 42c between above-mentioned seal 37 and seal 32c.
Each embodiment in this manual all adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar part mutually see.
Above-described embodiment, only for technical conceive of the present utility model and feature are described, its object is to person skilled in the art can be understood content of the present utility model and implement according to this, can not limit protection domain of the present utility model with this.All equivalences done according to the utility model Spirit Essence change or modify, and all should be encompassed within protection domain of the present utility model.
Claims (4)
1. a packer-can switch screen casing combination unit, it is in formation testing tubing string, described formation testing tubing string has the front end of close oil well mouth and the rear end away from described oil well mouth, and described formation testing tubing string comprises: the first subsystem connected in turn to the back-end from front end, packer-and can switch screen casing combination unit and the second subsystem;
It is characterized in that, described packer-can comprise by switch screen casing combination unit: pressure-transmitting joint, packer, can switch screen casing unit, pressure guiding joint, the pressure tube of hollow and leading pressure pipeline;
Described pressure-transmitting joint, packer, can switch screen casing unit and pressure guiding joint from front end sequential concatenation to the back-end, described pressure guiding joint is provided with pressure guiding joint inner chamber, described pressure tube is connected with pressure-transmitting joint, and from packer, can pass through in the middle of switch screen casing unit, pressure guiding joint inner chamber is stretched in the rear end of described pressure tube;
Describedly can produce opening and closing for the production passage making fluid and pass in and out formation testing tubing string by switch screen casing unit, describedly can be provided with and to be no less than one for connecting the first port of described leading pressure pipeline by switch screen casing unit;
Described pressure tube front end is provided with and described packer-can the pressurization passageway that communicates of switch screen casing combination unit outside, described pressure tube is communicated with pressurization passageway, described pressure tube also with described pressure guiding joint inner space, the outer wall of described pressure guiding joint is provided with pressure guiding pipeline port, described pressure guiding pipeline port and described pressure guiding joint inner space;
The two ends of described leading pressure pipeline be connected respectively to described pressure guiding pipeline port and described can the first port of switch screen casing unit, its for the pressure of described pressurization passageway is delivered to described can the first port of switch screen casing unit;
Describedly can form the second annular space between switch screen casing unit and described pressure tube, described pressure guiding joint inner chamber is communicated with described pressurization passageway, sealing blocking is provided with between described second annular space and described pressure guiding joint inner chamber, described sealing blocking when down-hole and described pressure guiding joint there is not relative motion, isolate for making described second annular space and described pressure guiding joint inner chamber.
2. packer according to claim 1-can switch screen casing combination unit, is characterized in that: describedly can comprise by switch screen casing unit:
Unit one: what connect in turn to the back-end from front end can open type screen casing subelement and can close formula screen casing subelement;
Or unit two: the closed formula screen casing subelement connected in turn to the back-end from front end and can open type screen casing subelement;
Or unit three: formula screen casing subelement can be closed;
Or unit four: can open type screen casing subelement;
In switch screen casing unit one, can be provided with the first port by open type screen casing subelement near the described of front end described, the described formula screen casing subelement that closes near rear end is provided with the first port and the second port that interconnect;
Described can in switch screen casing unit two, the described formula screen casing subelement that closes near front end is provided with the first port, can be provided with the first port and the second port that interconnect by open type screen casing subelement near the described of rear end; Described can switch screen casing unit one and can in switch screen casing unit two, the first adjoining port and the second port adopt branch's pressure guiding pipeline to be communicated with.
3. packer according to claim 2-can switch screen casing combination unit, it is characterized in that: the described formula screen casing subelement that closes comprises:
Have the sliding sleeve of inner chamber, described sliding sleeve can slide along described front end to described rear end, the outer wall of described sliding sleeve offers the step surface with the first shoulder, the sidewall of described sliding sleeve offers the first flow-guiding channel being communicated with described sliding sleeve inner chamber;
Top connection, it is set on the front end of described sliding sleeve, is connected with sliding sleeve by cutting off, and described top connection offers second flow-guiding channel that can be connected with described first flow-guiding channel;
Lower contact, it is set in the rear end of described sliding sleeve and is fixedly connected with described top connection, the first annular space is formed between described lower contact and described sliding sleeve, described first annular space is connected with the described step surface with the first shoulder, there is outside described sliding sleeve the seal of the first annular space rear end described in energy shutoff, described lower contact offers the first port, described first port is communicated with described first ring Kongxiang;
Described sliding sleeve has at least two operating positions, and when described sliding sleeve is positioned at the first operating position, cuts off and be connected with described top connection described in described sliding sleeve passes through, described first flow-guiding channel is connected with described second flow-guiding channel; When described sliding sleeve is positioned at the second operating position, described in cut off and cut off, described sliding sleeve slides to described rear end, and described first flow-guiding channel and described second flow-guiding channel are staggered.
4. packer according to claim 2-can switch screen casing combination unit, is characterized in that: describedly can comprise by open type screen casing subelement:
Have the sliding sleeve of inner chamber, described sliding sleeve can slide along described front end to described rear end, the outer wall of described sliding sleeve offers the step surface with the first shoulder, the sidewall of described sliding sleeve offers the first flow-guiding channel being communicated with described sliding sleeve inner chamber;
Top connection, it is set on the front end of described sliding sleeve, is connected with sliding sleeve by cutting off, and described top connection offers second flow-guiding channel that can be connected with described first flow-guiding channel;
Lower contact, it is set in the rear end of described sliding sleeve and is fixedly connected with described top connection, the first annular space is formed between described lower contact and described sliding sleeve, described first annular space is connected with the described step surface with the first shoulder, there is outside described sliding sleeve the seal of the first annular space rear end described in energy shutoff, described lower contact offers the first port, described first port is communicated with described first ring Kongxiang;
Described sliding sleeve has at least two operating positions, when described sliding sleeve is positioned at the first operating position, cuts off and be connected with described top connection described in described sliding sleeve passes through, and described first flow-guiding channel and described second flow-guiding channel are staggered; When described sliding sleeve is positioned at the second operating position, described in cut off and cut off, described sliding sleeve slides to described rear end, and described first flow-guiding channel is connected with described second flow-guiding channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520301026.XU CN204827334U (en) | 2015-05-12 | 2015-05-12 | But packer - switch screen pipe composite set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520301026.XU CN204827334U (en) | 2015-05-12 | 2015-05-12 | But packer - switch screen pipe composite set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204827334U true CN204827334U (en) | 2015-12-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520301026.XU Expired - Fee Related CN204827334U (en) | 2015-05-12 | 2015-05-12 | But packer - switch screen pipe composite set |
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| Country | Link |
|---|---|
| CN (1) | CN204827334U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105545282A (en) * | 2015-12-10 | 2016-05-04 | 中国石油天然气股份有限公司 | Layering continuous well testing system and use method thereof |
| CN106285548A (en) * | 2015-05-12 | 2017-01-04 | 张路铭 | Packer-switchable screen casing combination unit |
-
2015
- 2015-05-12 CN CN201520301026.XU patent/CN204827334U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106285548A (en) * | 2015-05-12 | 2017-01-04 | 张路铭 | Packer-switchable screen casing combination unit |
| CN106285548B (en) * | 2015-05-12 | 2018-09-21 | 江苏省金峰石油机械制造有限公司 | The switchable screen casing combination unit of packer- |
| CN105545282A (en) * | 2015-12-10 | 2016-05-04 | 中国石油天然气股份有限公司 | Layering continuous well testing system and use method thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151202 Termination date: 20170512 |