CN105672953A - Multifunctional well completion screen pipe tool and using method thereof - Google Patents
Multifunctional well completion screen pipe tool and using method thereof Download PDFInfo
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- CN105672953A CN105672953A CN201410675870.9A CN201410675870A CN105672953A CN 105672953 A CN105672953 A CN 105672953A CN 201410675870 A CN201410675870 A CN 201410675870A CN 105672953 A CN105672953 A CN 105672953A
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- screen casing
- drill string
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- casing body
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000007789 sealing Methods 0.000 claims abstract description 92
- 230000002093 peripheral effect Effects 0.000 claims abstract description 7
- 239000012530 fluid Substances 0.000 claims description 12
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 238000009826 distribution Methods 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 claims description 4
- 239000004744 fabric Substances 0.000 claims description 4
- 238000005553 drilling Methods 0.000 abstract description 16
- 238000010586 diagram Methods 0.000 description 10
- 239000007789 gas Substances 0.000 description 7
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical group [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 4
- 238000005065 mining Methods 0.000 description 4
- 230000003252 repetitive effect Effects 0.000 description 4
- 229910052717 sulfur Inorganic materials 0.000 description 4
- 239000011593 sulfur Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000004904 shortening Methods 0.000 description 3
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 231100000572 poisoning Toxicity 0.000 description 2
- 230000000607 poisoning effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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Abstract
The invention provides a multifunctional well completion screen tool and a using method thereof. The invention relates to a multifunctional well completion screen tool, which comprises: the drilling string comprises a drilling string body, a sieve tube body and a valve ball; the drill column body is provided with an axial channel, two ends of the drill column body are respectively provided with a joint, a drill column hole is radially formed in the drill column body and used for communicating the outside of the drill column body with the channel, and a descending limiting structure is arranged in the bottom of the drill column body; the sieve tube body is provided with an axial passage, the sieve tube body is arranged in the drill column body, and the sieve tube body is fixed with the drill column body; the inner wall of the sieve tube body is provided with a conical surface of the valve seat, the outer peripheral surface of the sieve tube body is provided with an annular groove, and a slot for communicating the outer part of the sieve tube body with the channel is arranged in the annular groove; a first sealing part, a second sealing part and a third sealing part are sequentially formed between the sieve tube body and the drill string body in the axial direction and are used for sealing the annular groove and the drill string hole; the valve ball is used for sealing the channel in the sieve tube body in a way of matching with the conical surface of the valve seat. The invention realizes the tool with the functions of a drill column and a well completion sieve tube.
Description
Technical field
The present invention relates to technical field of oil field equipment, particularly relate to a kind of multi-functional completion screen casing instrument and using method thereof.
Background technology
At present, along with the development of drilling technology, drill string limitation, prescription is more and more higher, and completion practice difficulty is also increasing, and the risk undertaken is also more and more higher. High pressure, high yield, high sulfur-bearing three-hypers gas field be in the extensive exploration and development initial stage, but in recent years, the situation of production of sulfur Gas Fields exploration and development is severe, in succession there occurs a lot of particularly serious blowout out of control, hydrogen sulfide poisoning accident, cause a tremendous loss of lives or cause that a large amount of masses are evacuated, bringing serious harmful effect to society. Therefore, for related personnel and the technical merit of equipment, quality and security management system, sulfur Gas Fields whole development experience being huge challenge.
In prior art, in sulfur Gas Fields exploration process, after being drilled well, need to taking out drill string and enter down completion tubular column again and carry out completion, so will certainly increase more and bigger risk, potential safety hazard is more. In the trip-out process of drilling well, additionally often occur that drill tool assembly fractures well, bit freezing etc.; once occur that drill tool assembly falls well; fishing must be implemented; owing to drill tool assembly fracture is irregular; processing cost is higher, if running into high-hydrogen sulfide gas-bearing formation, it may occur however that blowout out of control, hydrogen sulfide poisoning accident; can cause a tremendous loss of lives, bring great economic loss.
Therefore, problems of the prior art are, after being drilled well, need to take out drill string and enter down completion tubular column again and carry out completion, it may appear that drill tool assembly fractures the problem of well, bit freezing, and safety is relatively low.
Summary of the invention
The present invention provides a kind of multi-functional completion screen casing instrument and using method thereof, to overcome drill string in prior art to adopt different instruments, the problem that safety is relatively low from completion tubular column.
First aspect, the present invention provides a kind of multi-functional completion screen casing instrument, including:
Drill string body, screen casing body and valve ball;
Described drill string body, has the first axial passage, and two ends are respectively provided with joint, and described drill string body radially offers drill string hole, is used for connecting described drill string body exterior and described first axial passage, has descending position limiting structure in the bottom of described drill string body;
Described screen casing body, has the second axial passage, and described screen casing body is located at described drill string, and this is internal, and described screen casing body and described drill string body are fixed; The inwall of described screen casing body is formed with the valve seat conical surface, the outer peripheral face of described screen casing body has cannelure, having the slot connecting described screen casing body exterior with described second axial passage in described cannelure, described cannelure is presented axially in the described valve seat conical surface side away from described drill string body bottom portion; Sequentially form the first sealing, the second sealing and the 3rd sealing between described screen casing body and described drill string body in the axial direction, seal for described cannelure and described drill string hole are formed;
Valve ball, for closing intrinsic described second axial passage of described screen casing with described valve seat cone match.
In an exemplary embodiment of the present invention, in described cannelure, it is provided with screen cloth.
In an exemplary embodiment of the present invention, described screen casing body and described drill string body are fixed by shear pin.
In an exemplary embodiment of the present invention, described drill string body axially have multiple described drill string hole according to preset pitch distribution, described preset pitch is unequal.
In an exemplary embodiment of the present invention, described drill string hole is axially in spiral distribution described drill string body.
In an exemplary embodiment of the present invention, the intrinsic passage of described drill string has the first internal diameter section and the second internal diameter section, the internal diameter of described first internal diameter section is less than the internal diameter of described second internal diameter section, and described descending position limiting structure is positioned at described second internal diameter section.
In an exemplary embodiment of the present invention, described slot is keystone cut; Described keystone cut is axially offered along described screen casing body.
In an exemplary embodiment of the present invention, described slot is circumferentially distributed along described cannelure.
In an exemplary embodiment of the present invention, described descending position limiting structure is shoulder.
In an exemplary embodiment of the present invention, the outer wall of described screen casing body has the first seal groove, the second seal groove and the 3rd seal groove successively, being provided with the first sealing ring in described first seal groove, described first sealing ring forms described first sealing between described screen casing body and described drill string body; Being provided with the second sealing ring in described second seal groove, described second sealing ring forms described second sealing between described screen casing body and described drill string body; Being provided with the 3rd sealing ring in described 3rd seal groove, described 3rd sealing ring forms described 3rd sealing between described screen casing body and described drill string body.
Second aspect, the present invention provides the using method of a kind of multi-functional completion screen casing instrument, described multi-functional completion screen casing instrument to be the multi-functional completion screen casing instrument as according to any one of first aspect, described method, including:
When described multi-functional completion screen casing instrument realizes drill string function, make this internal valveless ball of screen casing, make the intrinsic channel conductive of described screen casing, and make described screen casing body and drill string body fix, the cannelure of described screen casing body utilize the described drill string body between described first sealing and described second sealing seal up, the described screen casing body between described second sealing and described 3rd sealing is utilized to seal up in the drill string hole of described drill string body, for completely cutting off the fluid of described drill string body exterior, described multi-functional completion screen casing instrument is made to form a complete drill string,
When described multi-functional completion screen casing instrument realizes completion screen casing function, described valve ball is put into described screen casing, and this is internal, make described valve ball match with the valve seat conical surface and block intrinsic second axial passage of described screen casing, so that the pressure of described screen casing body interior increases, so that described screen casing body disconnects bearing with described drill string body, so that described screen casing body falls on the descending position limiting structure of the bottom of described drill string body, so that the cannelure of described screen casing body is relative with the drill string hole of described drill string body, realize formation fluid and flow into the described screen casing body interior of described multi-functional completion screen casing instrument, making described multi-functional completion screen casing instrument realize by drill string power and energy is completion screen casing function.
The multi-functional completion screen casing instrument of the present invention and using method thereof, wherein multi-functional completion screen casing instrument, including: drill string body, screen casing body and valve ball, described drill string body, has the first axial passage, and two ends are respectively provided with joint, and described drill string body radially offers drill string hole, is used for connecting described drill string body exterior and described first axial passage, has descending position limiting structure in the bottom of described drill string body, described screen casing body, has the second axial passage, and described screen casing body is located at described drill string, and this is internal, and described screen casing body and described drill string body are fixed, the inwall of described screen casing body is formed with the valve seat conical surface, the outer peripheral face of described screen casing body has cannelure, having the slot connecting described screen casing body exterior with described passage in described cannelure, described cannelure is presented axially in the described valve seat conical surface side away from described drill string body bottom portion, sequentially form the first sealing, the second sealing and the 3rd sealing between described screen casing body and described drill string body in the axial direction, seal for described cannelure and described drill string hole are formed, valve ball, for closing intrinsic described second axial passage of described screen casing with described valve seat cone match, achieve same instrument and can have drill string function and completion screen casing function concurrently, after drilling well completes, do not take out drill string, drill string is directly stayed in well and realize completion screen casing function as completion tubular column, directly reservoir is carried out oil-gas mining, the repetitive operation of completion again after the trip-out of routine can be saved, a large amount of shortening drilling and well completion cycles, reduce various possible accident, improve the safety in operation, solve drill string in prior art and adopt different instruments from completion tubular column, the problem that safety is relatively low.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of multi-functional completion screen casing instrument one embodiment of the present invention;
Fig. 2 is the enlarged diagram at A place in Fig. 1;
Fig. 3 is the enlarged diagram at B place in Fig. 1;
Fig. 4 is the structural representation of the present invention multi-functional completion screen casing another embodiment of instrument;
Fig. 5 is the enlarged diagram at A place in Fig. 4;
Fig. 6 is the enlarged diagram at B place in Fig. 4;
Fig. 7 is the enlarged diagram at C place in Fig. 4;
Fig. 8 is the section of structure of the screen casing body that multi-functional completion screen casing instrument one embodiment of the present invention provides;
Fig. 9 is the section of structure realizing completion screen casing function that multi-functional completion screen casing instrument one embodiment of the present invention provides;
Figure 10 is the flow chart one of the using method embodiment of the multi-functional completion screen casing instrument of the present invention;
Figure 11 is the flowchart 2 of the using method embodiment of the multi-functional completion screen casing instrument of the present invention.
Detailed description of the invention
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is a part of embodiment of the present invention, rather than whole embodiments. Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention.
Fig. 1 is the structural representation of multi-functional completion screen casing instrument one embodiment of the present invention. Fig. 2 is the enlarged diagram at A place in Fig. 1. Fig. 3 is the enlarged diagram at B place in Fig. 1. As shown in Figure 1, 2, 3, the multi-functional completion screen casing instrument of the present embodiment, including:
Drill string body 1, screen casing body 2 and valve ball 5;
Described drill string body 1, having the first axial passage, two ends are respectively provided with joint, and described drill string body 1 radially offers drill string hole 17, for connecting described drill string body 1 outside and described first axial passage, there is in the bottom of described drill string body 1 descending position limiting structure 11;
Described screen casing body 2, has the second axial passage, and described screen casing body 2 is located in described drill string body 1, and described screen casing body 2 is fixed with described drill string body 1; The inwall of described screen casing body 2 is formed with the valve seat conical surface 18, the outer peripheral face of described screen casing body 2 has cannelure 19, having in described cannelure 19 and connect the outside slot 20 with described passage of described screen casing body 2, described cannelure 19 is presented axially in the described valve seat conical surface 18 away from the side bottom described drill string body 1; Sequentially form the first sealing the 6, second sealing 3 and the 3rd sealing 4 between described screen casing body 2 and described drill string body 1 in the axial direction, seal for described cannelure 19 and described drill string hole 17 are formed;
Valve ball 5, for coordinating described second axial passage closed in described screen casing body 2 with the described valve seat conical surface 18.
Specifically, as shown in Figure 1, 2, 3, the multi-functional completion screen casing instrument of the present embodiment, including: drill string body 1, there is the first axial passage, the two ends of drill string body 1 are respectively provided with joint, as shown in fig. 1, forming top connection 101 and lower contact 102, drill string body 1 radially offers the drill string hole 17 inside and outside connection drill string body 1, drill string body 1 is internal has descending position limiting structure 11 near lower contact;
Screen casing body 2, there is the second axial passage, screen casing body 2 is located in drill string body 1, seal between screen casing body 2 and drill string body 1 and fix, the inwall of screen casing body 2 is formed the valve seat conical surface 18, the outer peripheral face of screen casing body 2 has cannelure 19, cannelure 19 is presented axially in the top of the valve seat conical surface 18, there are in the cannelure 19 of screen casing body 2 the multiple slots 20 inside and outside connection screen casing body 2, slot 20 is distributed in the circumference of cannelure 19, the first sealing 6 is formed in the axial direction from top to bottom between screen casing body 2 and drill string body 1, second sealing 3 and the 3rd sealing 4, when described Multifunctional sieve piping tool is as drill string, seal for described cannelure 19 and described drill string hole 17 are formed,
Valve ball 5, for coordinating the second axial passage in close screen tube body 2 with the valve seat conical surface 18.
The multi-functional completion screen casing instrument of the embodiment of the present invention is when realizing drill string function, cannelure 19 on screen casing body 2 staggers with the drill string hole about 17 on drill string body 1, screen casing body 2 and drill string body 1 are fixed, cannelure 19 is between the first sealing 6 and the second sealing 3, drill string hole 17 is between the second sealing 3 and the 3rd sealing 4, the closing to cannelure 19 is realized by the first sealing 6 and the second sealing 3, second sealing 3 and the 3rd sealing 4 realize the closing to drill string hole 17, external fluid can not enter this multi-functional completion screen casing tool interior, and in screen casing body 2, there is no valve ball 5, channels open in screen casing body 2, now, multi-functional completion screen casing instrument realizes drill string function as a complete well drilling pipe column, transmission the pressure of the drill and moment of torsion. the multi-functional completion screen casing instrument of the embodiment of the present invention is when realizing completion screen casing function, put into valve ball 5, valve ball 5 coordinates the passage in close screen tube body 2 with the valve seat conical surface 18, built the pressure by inside, after disconnecting screen casing body 2 and the bearing of drill string body 1 descending until with descending position limiting structure 11 phase effect, now cannelure 19 is relative with drill string hole 17, and first sealing 6 and the second sealing 3 respectively the two ends of cannelure 19 with drill string hole 17 are sealed, again due to the sealing process of valve ball 5, external fluid enters multi-functional completion screen casing tool interior only by drill string hole 17 and slot 20, and be conveyed upwards into ground and realize mining operations.
The advantage of the multi-functional completion screen casing instrument of the present invention:
The multi-functional completion screen casing instrument that the present invention proposes, has drill string function and completion screen casing function concurrently, after drilling well completes, does not take out drill string, directly stayed by drill string in well and realize completion screen casing function as completion tubular column, directly reservoir is carried out oil-gas mining. Particularly deep-well and ultradeep well nitrogen injection drilling and when being drilled well operations of high-hydrogen sulfide gas well, the repetitive operation of completion again after the trip-out of routine can be saved, in a large amount of shortening drilling and well completion cycles, reduce various possible accident, save completion cost simultaneously.
The present embodiment, multi-functional completion screen casing instrument, including: drill string body, screen casing body and valve ball, described drill string body, has the first axial passage, and two ends are respectively provided with joint, and described drill string body radially offers drill string hole, is used for connecting described drill string body exterior and described first axial passage, has descending position limiting structure in the bottom of described drill string body, described screen casing body, has the second axial passage, and described screen casing body is located at described drill string, and this is internal, and described screen casing body and described drill string body are fixed, the inwall of described screen casing body is formed with the valve seat conical surface, the outer peripheral face of described screen casing body has cannelure, having the slot connecting described screen casing body exterior with described second axial passage in described cannelure, described cannelure is presented axially in the described valve seat conical surface side away from described drill string body bottom portion, sequentially form the first sealing, the second sealing and the 3rd sealing between described screen casing body and described drill string body in the axial direction, seal for described cannelure and described drill string hole are formed, valve ball, for closing intrinsic described second axial passage of described screen casing with described valve seat cone match, achieve same instrument and can have drill string function and completion screen casing function concurrently, after drilling well completes, do not take out drill string, drill string is directly stayed in well and realize completion screen casing function as completion tubular column, directly reservoir is carried out oil-gas mining, the repetitive operation of completion again after the trip-out of routine can be saved, a large amount of shortening drilling and well completion cycles, reduce various possible accident, improve the safety in operation, solve drill string in prior art and adopt different instruments from completion tubular column, the problem that safety is relatively low.
In other embodiments of the invention, the present embodiment continues to use part numbers and the partial content of previous embodiment, wherein adopts identical label to represent identical parts, and eliminates the explanation of constructed content. Explanation about clipped can refer to previous embodiment, and it is no longer repeated for the present embodiment.
In an illustrative embodiments of the embodiment of the present invention, in described cannelure 19, it is provided with screen cloth;
Specifically, it is provided with screen cloth in cannelure 19 and can filter out some particulate matters, such as silt etc.
Fig. 4 is the structural representation of the present invention multi-functional completion screen casing another embodiment of instrument. Fig. 5 is the enlarged diagram at A place in Fig. 4. Fig. 6 is the enlarged diagram at B place in Fig. 4. Fig. 7 is the enlarged diagram at C place in Fig. 4. Fig. 8 is the section of structure of the screen casing body that multi-functional completion screen casing instrument one embodiment of the present invention provides. Fig. 9 is the section of structure realizing completion screen casing function that multi-functional completion screen casing instrument one embodiment of the present invention provides.
In an illustrative embodiments of the embodiment of the present invention, such as Fig. 4, shown in 7, described screen casing body 2 is fixed by shear pin 8 with described drill string body 1.
Can also being fixed realization by other structures in the embodiment of the present invention, the present invention is not limited thereto.
In an illustrative embodiments of the embodiment of the present invention, being axially distributed according to preset pitch of described drill string body 1 has multiple described drill string hole 17, and described preset pitch is unequal.
In an illustrative embodiments of the embodiment of the present invention, described drill string hole 17 is axially in spiral distribution described drill string body 1.
Specifically, preferred as above-described embodiment, in present embodiment, drill string hole 17 is at the axially unequally distributed blades of drill string body 1. Thus improve the intensity of drill string body 1, meeting it and realizing drill string function and transmit the pressure of the drill and moment of torsion. Wherein drill string hole 17 is in spiral distribution, it is possible to better realize drill string hole 17 unequally distributed blades, it is ensured that the intensity of drill string body 1, and easily fabricated.
In an illustrative embodiments of the embodiment of the present invention, passage in described drill string body 1 has the first internal diameter section 13 and the second internal diameter section 12, the internal diameter of described first internal diameter section 13 is less than the internal diameter of described second internal diameter section 12, and described descending position limiting structure 11 is positioned at described second internal diameter section 12.
Specifically, as shown in Fig. 4,7,9, in present embodiment, passage in drill string body 1 has the first internal diameter section 13 and the second internal diameter section 12, the internal diameter of the first internal diameter section 13 is less than the internal diameter of the second internal diameter section 12, second internal diameter section 12 connects with the lower end of the first internal diameter section 13, and descending position limiting structure 11 is positioned at the second internal diameter section 12, and drill string hole 17 is positioned at the first internal diameter section 13. The internal diameter of the second internal diameter section 12, slightly larger than the internal diameter of the first internal diameter section 13, can fall into rapidly the descending position limiting structure place in the second internal diameter section 12 in the bottom cutting off shear pin 8 ethmoid canal,posterior body 2.
In an illustrative embodiments of the embodiment of the present invention, described slot 20 is keystone cut; Described keystone cut is axially offered along described screen casing body 2.
In an illustrative embodiments of the embodiment of the present invention, described slot 20 is circumferentially distributed along described cannelure 19.
Specifically, in the present embodiment, slot 20 is keystone cut, for instance trapezoidal angle is 3-8 degree. In other embodiments of the present invention, slot 20 can also is that the various shape such as rectangle or special-shaped (circular hole). It addition, the distributional pattern of slot 20 can be longitudinally, spiral is in line or alternating expression arrangement. In the present embodiment, keystone cut is offered along the axis of screen casing body 2, i.e. longitudinal arrangement, and circumferentially distributed multiple along described cannelure 19.
In an illustrative embodiments of the embodiment of the present invention, described descending position limiting structure is shoulder.
Specifically, in the present embodiment, as shown in Figure 4, descending position limiting structure 11 is shoulder. Screen casing body 2 comes downwards to the bottom 14 of screen casing body 2 and acts on mutually with shoulder and stop. This kind of simple in construction, it is easy to manufacture, and enough support force can be provided for screen casing body 2. Certainly, descending position limiting structure 11 may be used without other and any can act on screen casing body 2, stops the structure that screen casing body 2 is descending. Structure such as slotted collar and draw-in groove also can realize this function. The those skilled in the art that specifically arrange of slotted collar and draw-in groove according to practical situation or need to determine voluntarily, can not repeat them here.
In an illustrative embodiments of the embodiment of the present invention, the outer wall of described screen casing body 2 has the first seal groove the 61, second seal groove 31 and the 3rd seal groove 41 successively, being provided with the first sealing ring 62 in described first seal groove 61, described first sealing ring 62 forms described first sealing 6 between described screen casing body 2 and described drill string body 1; Being provided with the second sealing ring 32 in described second seal groove 31, described second sealing ring 32 forms described second sealing 3 between described screen casing body 2 and described drill string body 1; Being provided with the 3rd sealing ring 42 in described 3rd seal groove 41, described 3rd sealing ring 42 forms described 3rd sealing 4 between described screen casing body 2 and described drill string body 1.
Specifically, in conjunction with Fig. 4 to shown in 9, as long as the sealing between screen casing body 2 and drill string body 1 is capable of following purpose, concrete structure is also unrestricted: first, when instrument realizes drill string function, the inside and outside isolation of the instrument that reaches; Secondly, when instrument realizes completion screen casing function, fluid is made to reach tool interior only by drill string hole 17 and slot 20. In the present embodiment, the outside wall surface of screen casing body 1 has the first seal groove the 61, second seal groove 31 and the 3rd seal groove 41 from top to bottom, the first sealing ring 62 it is provided with in first seal groove 61, first sealing ring 62 forms the first sealing 6 between screen casing body 2 and drill string body 1, the second sealing ring 32 it is provided with in second seal groove 31, second sealing ring 32 forms the second sealing 3 between screen casing body 2 and drill string body 1, being provided with the 3rd sealing ring 42 in 3rd seal groove 41, the 3rd sealing ring 42 forms the 3rd sealing 4 between screen casing body 2 and drill string body 1. Above-mentioned structure makes sealing structure together move with screen casing body 2, thus ensure that the sealing demand when realizing drill string function and completion screen casing function. It should be noted that the number of the first seal groove 61 and corresponding first sealing ring 62 forming the first sealing 6 can be determined as required, it is not limited to one or two. Equally, the setting of the second sealing 3 and the 3rd sealing 4 is also such.
In an illustrative embodiments of the embodiment of the present invention, such as Fig. 7, shown in 9, the excircle of screen casing body 2 has shear pin cannelure 10, having shear pin nail 9 on drill string body 1, shear pin 8 simultaneously acts on shear pin cannelure 10 and shear pin nail 9 makes screen casing body 2 and drill string body 1 fix.
The multi-functional completion screen casing instrument advantage of the present invention is as follows:
The multi-functional completion screen casing instrument of the present invention eliminates the repetitive operation of completion again after the trip-out of routine, particularly it is drilled well operations at the nitrogen injection drilling of deep-well and ultradeep well and high-hydrogen sulfide gas well, the drilling and well completion cycle can be shortened in a large number, minimizing accident, save cost, namely after drilling well completes, do not take out drill string, drill string is directly stayed in well as completion tubular column. Can be automatically obtained by drill string power and energy by valve ball and stratum pump pressure is completion screen casing function, and this tool construction is compact, it is easy to implement, easy to process, less costly.
Figure 10 is the flow chart one of the using method embodiment of the multi-functional completion screen casing instrument of the present invention. Figure 11 is the flowchart 2 of the using method embodiment of the multi-functional completion screen casing instrument of the present invention, the method of the present embodiment, it is applied to multi-functional completion screen casing instrument, the structure of described multi-functional completion screen casing instrument adopts the structure of multi-functional completion screen casing instrument as described in any one of above-described embodiment, as shown in Figure 10, when described multi-functional completion screen casing instrument realizes drill string function, described method includes:
Step 1001, make this internal valveless ball of screen casing, make the intrinsic channel conductive of described screen casing.
Step 1002, described screen casing body and drill string body is made to fix.
Step 1003, the cannelure of described screen casing body utilize the described drill string body between described first sealing and described second sealing seal up, the described screen casing body between described second sealing and described 3rd sealing is utilized to seal up in the drill string hole of described drill string body, for completely cutting off the fluid of described drill string body exterior, described multi-functional completion screen casing instrument is made to form a complete drill string.
As shown in figure 11, when described multi-functional completion screen casing instrument realizes completion screen casing function, described method includes:
Step 1101, described valve ball puts into described screen casing, and this is internal.
Step 1102, make described valve ball match with the valve seat conical surface and block intrinsic second axial passage of described screen casing, so that the pressure of described screen casing body interior increases, so that described screen casing body disconnects bearing with described drill string body, so that described screen casing body falls on the descending position limiting structure of the bottom of described drill string body, so that the cannelure of described screen casing body is relative with the drill string hole of described drill string body, realize formation fluid and flow into the described screen casing body interior of described multi-functional completion screen casing instrument, making described multi-functional completion screen casing instrument realize by drill string power and energy is completion screen casing function.
Specifically, when multi-functional completion screen casing instrument as shown in Figure 4 realizes drill string function, without valve ball 5 in screen casing body 2, the second axial passage conducting in screen casing body 2, screen casing body 2 is fixed with drill string body 1 by shear pin 8, the cannelure 19 of screen casing body 2 is on the top of drill string body 1, sealed up by the drill string body 1 of non-perforate between the first sealing 6 and the second sealing 3, and drill string hole 17 is sealed up by the second sealing 3 and the 3rd screen casing body 2 sealed between 4, realize isolation fluid outside drill string body 1, form a complete well drilling pipe column;
When multi-functional completion screen casing instrument realizes completion screen casing function, put into valve ball 5, valve ball 5 match with the valve seat conical surface 18 closure screen casing body 2 in the second axial passage, built the pressure power by valve ball 5, screen casing body 2 cuts off shear pin 8, screen casing body 2 is pushed into bottom drill string body 1, and stop descending under the effect of descending position limiting structure 11, now the cannelure of screen casing body 2 19 is relative with 17, the drill string hole of drill string body 1, open the fluid passage between formation fluid and completion screen casing, it is achieved be completion screen casing function by drill string power and energy.
The method of the present embodiment, the structure of the employing multi-functional completion screen casing instrument as according to any one of above-described embodiment, it is similar with effect that it realizes principle, repeats no more herein.
Last it is noted that various embodiments above is only in order to illustrate technical scheme, it is not intended to limit; Although the present invention being described in detail with reference to foregoing embodiments, it will be understood by those within the art that: the technical scheme described in foregoing embodiments still can be modified by it, or wherein some or all of technical characteristic is carried out equivalent replacement; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (11)
1. a multi-functional completion screen casing instrument, it is characterised in that including:
Drill string body, screen casing body and valve ball;
Described drill string body, has the first axial passage, and two ends are respectively provided with joint, and described drill string body radially offers drill string hole, is used for connecting described drill string body exterior and described first axial passage, has descending position limiting structure in the bottom of described drill string body;
Described screen casing body, has the second axial passage, and described screen casing body is located at described drill string, and this is internal, and described screen casing body and described drill string body are fixed; The inwall of described screen casing body is formed with the valve seat conical surface, the outer peripheral face of described screen casing body has cannelure, having the slot connecting described screen casing body exterior with described second axial passage in described cannelure, described cannelure is presented axially in the described valve seat conical surface side away from described drill string body bottom portion; Sequentially form the first sealing, the second sealing and the 3rd sealing between described screen casing body and described drill string body in the axial direction, seal for described cannelure and described drill string hole are formed;
Valve ball, for closing intrinsic described second axial passage of described screen casing with described valve seat cone match.
2. instrument according to claim 1, it is characterised in that be provided with screen cloth in described cannelure.
3. instrument according to claim 1 and 2, it is characterised in that described screen casing body and described drill string body are fixed by shear pin.
4. instrument according to claim 1 and 2, it is characterised in that being axially distributed according to preset pitch of described drill string body has multiple described drill string hole, and described preset pitch is unequal.
5. instrument according to claim 4, it is characterised in that described drill string hole is axially in spiral distribution described drill string body.
6. instrument according to claim 1 and 2, it is characterized in that, the intrinsic passage of described drill string has the first internal diameter section and the second internal diameter section, and the internal diameter of described first internal diameter section is less than the internal diameter of described second internal diameter section, and described descending position limiting structure is positioned at described second internal diameter section.
7. instrument according to claim 1 and 2, it is characterised in that described slot is keystone cut; Described keystone cut is axially offered along described screen casing body.
8. instrument according to claim 1 and 2, it is characterised in that described slot is circumferentially distributed along described cannelure.
9. instrument according to claim 1 and 2, it is characterised in that described descending position limiting structure is shoulder.
10. instrument according to claim 1 and 2, it is characterized in that, the outer wall of described screen casing body has the first seal groove, the second seal groove and the 3rd seal groove successively, being provided with the first sealing ring in described first seal groove, described first sealing ring forms described first sealing between described screen casing body and described drill string body; Being provided with the second sealing ring in described second seal groove, described second sealing ring forms described second sealing between described screen casing body and described drill string body; Being provided with the 3rd sealing ring in described 3rd seal groove, described 3rd sealing ring forms described 3rd sealing between described screen casing body and described drill string body.
11. the using method of a multi-functional completion screen casing instrument, it is characterised in that described multi-functional completion screen casing instrument is the multi-functional completion screen casing instrument as described in any one of claim 1-10, described method, including:
When described multi-functional completion screen casing instrument realizes drill string function, make this internal valveless ball of screen casing, make the intrinsic channel conductive of described screen casing, and make described screen casing body and drill string body fix, the cannelure of described screen casing body utilize the described drill string body between described first sealing and described second sealing seal up, the described screen casing body between described second sealing and described 3rd sealing is utilized to seal up in the drill string hole of described drill string body, for completely cutting off the fluid of described drill string body exterior, described multi-functional completion screen casing instrument is made to form a complete drill string,
When described multi-functional completion screen casing instrument realizes completion screen casing function, described valve ball is put into described screen casing, and this is internal, make described valve ball match with the valve seat conical surface and block intrinsic second axial passage of described screen casing, so that the pressure of described screen casing body interior increases, so that described screen casing body disconnects bearing with described drill string body, so that described screen casing body falls on the descending position limiting structure of the bottom of described drill string body, so that the cannelure of described screen casing body is relative with the drill string hole of described drill string body, realize formation fluid and flow into the described screen casing body interior of described multi-functional completion screen casing instrument, making described multi-functional completion screen casing instrument realize by drill string power and energy is completion screen casing function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410675870.9A CN105672953A (en) | 2014-11-21 | 2014-11-21 | Multifunctional well completion screen pipe tool and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410675870.9A CN105672953A (en) | 2014-11-21 | 2014-11-21 | Multifunctional well completion screen pipe tool and using method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105672953A true CN105672953A (en) | 2016-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410675870.9A Pending CN105672953A (en) | 2014-11-21 | 2014-11-21 | Multifunctional well completion screen pipe tool and using method thereof |
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| Country | Link |
|---|---|
| CN (1) | CN105672953A (en) |
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|---|---|---|---|---|
| CN201090177Y (en) * | 2007-09-25 | 2008-07-23 | 中国石油化工股份有限公司胜利油田分公司采油工艺研究院 | Multifunctional check valve |
| CN201610748U (en) * | 2009-11-03 | 2010-10-20 | 长沙市罡拓能源科技有限公司 | Ball throwing-type sliding sleeve screen pipe device |
| RU2429342C1 (en) * | 2009-12-28 | 2011-09-20 | Общество с ограниченной ответственностью "Фирма "Радиус-Сервис" | Filter for drill column with hydraulic downhole motor |
| CN103061683A (en) * | 2013-01-11 | 2013-04-24 | 西南石油大学 | Dual-purpose tool as drill stem and well completion sieve tube |
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- 2014-11-21 CN CN201410675870.9A patent/CN105672953A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201090177Y (en) * | 2007-09-25 | 2008-07-23 | 中国石油化工股份有限公司胜利油田分公司采油工艺研究院 | Multifunctional check valve |
| CN201610748U (en) * | 2009-11-03 | 2010-10-20 | 长沙市罡拓能源科技有限公司 | Ball throwing-type sliding sleeve screen pipe device |
| RU2429342C1 (en) * | 2009-12-28 | 2011-09-20 | Общество с ограниченной ответственностью "Фирма "Радиус-Сервис" | Filter for drill column with hydraulic downhole motor |
| CN103061683A (en) * | 2013-01-11 | 2013-04-24 | 西南石油大学 | Dual-purpose tool as drill stem and well completion sieve tube |
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Application publication date: 20160615 |