CN110630225A - Same-layer meshing perforation method and device - Google Patents
Same-layer meshing perforation method and device Download PDFInfo
- Publication number
- CN110630225A CN110630225A CN201910916122.8A CN201910916122A CN110630225A CN 110630225 A CN110630225 A CN 110630225A CN 201910916122 A CN201910916122 A CN 201910916122A CN 110630225 A CN110630225 A CN 110630225A
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- Prior art keywords
- meshing
- perforator
- phase
- central tube
- packer
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000005540 biological transmission Effects 0.000 claims abstract description 18
- 238000012937 correction Methods 0.000 claims description 4
- 230000000977 initiatory effect Effects 0.000 claims description 4
- 230000008602 contraction Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 7
- 239000010779 crude oil Substances 0.000 abstract description 6
- 239000003921 oil Substances 0.000 abstract description 5
- 230000035515 penetration Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/11—Perforators; Permeators
- E21B43/116—Gun or shaped-charge perforators
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/11—Perforators; Permeators
- E21B43/116—Gun or shaped-charge perforators
- E21B43/1185—Ignition systems
- E21B43/11852—Ignition systems hydraulically actuated
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/11—Perforators; Permeators
- E21B43/119—Details, e.g. for locating perforating place or direction
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention provides a same-layer meshing perforation method and a device, which relate to the technical field of oil exploration, and the device comprises: the device comprises a packer, an annular pressurizing device, a pressure transmission device, a longitudinal meshing deployment device and a phase meshing perforator; sequentially installing an annular pressurizing device, a pressure transmission device, a packer, a longitudinal meshing and expanding device and a phase meshing perforator from a wellhead to a target layer; the phase engagement perforator includes a first perforating gun and a second perforating gun connected. The method and the device provided by the invention can reduce the construction risk caused by a perforation mode in the prior art and simultaneously improve the crude oil productivity.
Description
Technical Field
The invention relates to the technical field of oil exploration, in particular to a same-layer meshing perforation method and device.
Background
In oil exploration and development, perforation is a key link in the well completion process. At present, the most widely applied method is to adopt a shaped perforator, perforate a casing and a well cementation cement sheath to communicate a shaft and an original stratum for subsequent production.
The perforator consists of perforating bullet, perforating gun and other firer fittings, and its main indexes include penetration depth, aperture, hole density and phase position, the penetration depth and aperture are determined by the performance of the perforating bullet itself, and the hole density and phase position are determined by the arrangement density and arrangement mode of the perforating bullet in the perforating gun. The penetration depth is the premise of whether the shaft and the stratum can effectively reach communication or not, and the size of the seepage area determined by the aperture is not considered due to the fact that the penetration depth and the aperture are in an inverse proportion relation under the limitation of a perforating bullet structure. Therefore, in order to improve the perforation effect, the loading density is reasonably increased, the arrangement mode of loading is improved, the seepage area in a unit shaft is increased, and the productivity of an oil well can be effectively improved under the condition of ensuring the penetration depth. Due to the limitation of the geometrical sizes of the perforating gun and the perforating bullet, the loading density of a single perforator cannot be improved to a certain degree, and therefore repeated perforation in the same layer is an effective means for increasing the hole density.
In the prior art, a method of single perforation is usually adopted, but the ammunition contained in the single perforation is limited, so the arrangement density in the perforating gun needs to be improved, the arrangement mode needs to be regular, when repeated perforation operation is carried out on oil pipe conveying perforation (TCP), the perforating gun needs to be put down twice, well killing is needed when a first perforating pipe column is taken out, the stratum is easily polluted, the time efficiency of the whole operation of the two times of taking out and putting down the pipe column is low, and the construction risk is high.
In summary, in the prior art, the perforation method easily causes construction risks, and reduces the crude oil productivity.
Disclosure of Invention
In view of the above, the present invention provides a method and an apparatus for performing perforation in a same layer engagement, so as to reduce the risk of construction caused by the perforation method in the prior art and improve the crude oil productivity.
4. In a first aspect, embodiments of the present invention provide a same-layer meshing perforation device, including: the device comprises a packer, an annular pressurizing device, a pressure transmission device, a longitudinal meshing deployment device and a phase meshing perforator;
sequentially installing the annular pressurizing device, the pressure transmission device, the packer, the longitudinal meshing deployment device and the phase meshing perforator from a wellhead to a target layer;
the phase engagement perforator includes a first perforating gun and a second perforating gun connected.
And sequentially installing the annular pressurizing device, the pressure transmission device, the packer, the longitudinal meshing deployment device, the phase meshing perforator and the second phase meshing perforator from a wellhead to a target layer.
Specifically, the longitudinal meshing unfolding device comprises an outer barrel, a limiting step, a central pipe and a pin;
in an initial state, the central tube is inserted into the outer barrel, the longitudinal meshing unfolding device is pressurized to enable the central tube to cut off the pin, and the central tube moves to the limiting step to achieve stretching and retracting of the longitudinal meshing unfolding device.
On the other hand, the invention provides a same-layer meshing perforation method which specifically comprises the following steps:
s1: connecting the whole tool to a target layer, and performing depth correction work to seal the packer on the well wall for sealing;
s2: pressurizing the annulus so that the pressure is transmitted into the annulus below the packer through the annulus pressurizing device and the pressure transmission device, and detonating the bottom perforating gun of the first-phase engagement perforator to complete perforation;
s3: pressurizing the longitudinally-engaged deployment device to cause the central tube to cut off the pin, the central tube moving to the limit step to achieve the expansion and contraction of the longitudinally-engaged deployment device;
s4: wellhead pressure is transmitted into the interior of the central tube to cause the pressure initiation device to detonate the second phase engagement perforator.
The embodiment of the invention has the following beneficial effects: the invention provides a same-layer meshing perforation method and a device, wherein the device comprises: the device comprises a packer, an annular pressurizing device, a pressure transmission device, a longitudinal meshing deployment device and a phase meshing perforator; sequentially installing an annular pressurizing device, a pressure transmission device, a packer, a longitudinal meshing and expanding device and a phase meshing perforator from a wellhead to a target layer; the phase engagement perforator includes a first perforating gun and a second perforating gun connected. The method and the device provided by the invention can reduce the construction risk caused by a perforation mode in the prior art and simultaneously improve the crude oil productivity.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a diagram of a pre-longitudinal deployment phase engagement perforator bottom perforating gun alignment level perforation state provided by an embodiment of the present invention;
FIG. 2 is a diagram of a longitudinally-deployed post-phase-engagement perforator upper-end gun alignment-horizon perforation state provided in accordance with an embodiment of the present invention;
FIG. 3 is a comparative illustration of the deployment of single perforation and conventional repeat perforation perforations in casing provided by an embodiment of the present invention;
FIG. 4 is a schematic diagram of a longitudinally engaged stent according to an embodiment of the present invention;
fig. 5 is an assembly block diagram of a phase-engagement perforating gun according to an embodiment of the present invention.
Icon: 101-annulus pressurization means; 102-a packer; 103-longitudinally engaging the deployment device; 104-a second perforating gun; 105-a destination layer; 106-a first perforating gun; 401-limit step; 402-shear pins; 403-central tube.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Based on the fact that the construction risk is easily caused by the existing perforation mode and the crude oil productivity is reduced, the same-layer meshing perforation method and the same-layer meshing perforation device can slowly reduce the construction risk caused by the perforation mode in the prior art and improve the crude oil productivity.
The first embodiment is as follows:
to facilitate an understanding of the present embodiment, a detailed description of a same-layer engagement perforating device disclosed in the present embodiments will be provided.
The embodiment of the invention provides a same-layer meshing perforating device, which comprises: the system comprises a packer, an annular pressurizing device, a pressure transmission device, a longitudinal meshing deployment device, a phase meshing perforator and a second phase meshing perforator;
the annulus pressurization device 101, the pressure transfer device, the packer 102, the longitudinally-engaged deployment device 103, and the phase-engaged perforating gun are installed in sequence from the wellhead to the formation of interest.
Sequentially installing the annular pressurizing device, the pressure transmission device, the packer, the longitudinal meshing deployment device and the phase meshing perforator from a wellhead to a target layer;
the phase-engagement perforating gun includes a second perforating gun 104 and a first perforating gun 106 connected thereto.
Specifically, the packer is an RTTS packer;
referring to fig. 1 and 2, the structural principle of the tool string for assembling the phase-engagement perforating gun before the well is shown in fig. 5. Connecting the whole tool string to a target layer, depth correction, enabling the packer 102 to be supported on a well wall in a setting mode and sealed, aligning a perforating gun at the bottom end of the first perforating gun 106 to the target layer 105 at the moment, performing annular pressurization on a well mouth, transmitting annular pressure to the annular space below the packer 102 through the annular pressurizing device 101 and the pressure transmission device above the packer, igniting the perforating gun at the bottom end of the first perforating gun 106 to complete perforation, switching pressure transmission channels of the annular pressurizing device and the pressure transmission device, closing the pressurizing channel below the packer 102 and opening a production channel, and allowing formation fluid to enter an oil pipe above the packer 102 through the production channel opened by the annular pressurizing device and the pressure transmission device to produce.
Specifically, the longitudinal meshing deployment device comprises an outer barrel, a central tube 403, a limiting step 401 and a shearing pin 402.
In the initial state, the central tube 403 is inserted into the outer barrel, the longitudinal engagement deployment device is pressurized to cut the pin by the shearing pin 402, and the central tube 403 moves to the limiting step 401 to realize the extension and retraction of the longitudinal engagement deployment device.
Example two:
the embodiment of the invention provides a same-layer meshing perforation method, which specifically comprises the following steps:
s1: connecting the whole tool to a target layer, and performing depth correction work to seal the packer on the well wall for sealing;
s2: pressurizing the annulus so that the pressure is transmitted into the annulus below the packer through the annulus pressurizing device and the pressure transmission device, and detonating the bottom perforating gun of the first-phase engagement perforator to complete perforation;
s3: pressurizing the longitudinally-engaged deployment device to cause the central tube to cut off the pin, the central tube moving to the limit step to achieve the expansion and contraction of the longitudinally-engaged deployment device;
s4: wellhead pressure is transmitted into the interior of the central tube to cause the pressure initiation device to detonate the second phase engagement perforator.
Example three:
as shown in fig. 3, the perforating guns are assembled according to the designed phase, the perforating guns of the first perforating gun and the second perforating gun are connected by a phase adjusting joint, the second perforating gun 104 is rotated by taking a certain phase of the first perforating gun 106 as a reference, when the phase of the first perforating gun 106 and the phase of the second perforating gun 104 reach the design requirement, the second perforating gun 104 is finely adjusted to enable the phase adjusting hole on the end surface to correspond to the phase adjusting hole on the phase adjusting joint, the fixing pin is tightened, at the moment, the phase between the first perforating gun 106 and the second perforating gun 104 forms a fixed included angle, and the pressure initiation device is assembled at the bottom end of the first perforating gun 106 and the upper end of the second perforating gun 104 to form a complete phase engagement perforating gun.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the system and the apparatus described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In addition, in the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (3)
1. A same-layer engagement perforating device, comprising: the device comprises a packer, an annular pressurizing device, a pressure transmission device, a longitudinal meshing deployment device and a phase meshing perforator;
sequentially installing the annular pressurizing device, the pressure transmission device, the packer, the longitudinal meshing deployment device and the phase meshing perforator from a wellhead to a target layer;
the phase engagement perforator includes a first perforating gun and a second perforating gun connected.
2. The device of claim 1, wherein the longitudinally-engaging deployment device comprises an outer barrel, a stop step, a central tube, and a pin;
in an initial state, the central tube is inserted into the outer barrel, the longitudinal meshing unfolding device is pressurized to enable the central tube to cut off the pin, and the central tube moves to the limiting step to achieve stretching and retracting of the longitudinal meshing unfolding device.
3. A method of using the apparatus of claim 1, in particular according to the following steps:
s1: connecting the whole tool to a target layer, and performing depth correction work to seal the packer on the well wall for sealing;
s2: pressurizing the annulus so that the pressure is transmitted into the annulus below the packer through the annulus pressurizing device and the pressure transmission device, and detonating the bottom perforating gun of the first-phase engagement perforator to complete perforation;
s3: pressurizing the longitudinally-engaged deployment device to cause the central tube to cut off the pin, the central tube moving to the limit step to achieve the expansion and contraction of the longitudinally-engaged deployment device;
s4: wellhead pressure is transmitted into the interior of the central tube to cause the pressure initiation device to detonate the second phase engagement perforator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910916122.8A CN110630225A (en) | 2019-09-26 | 2019-09-26 | Same-layer meshing perforation method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910916122.8A CN110630225A (en) | 2019-09-26 | 2019-09-26 | Same-layer meshing perforation method and device |
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| Publication Number | Publication Date |
|---|---|
| CN110630225A true CN110630225A (en) | 2019-12-31 |
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| CN201910916122.8A Pending CN110630225A (en) | 2019-09-26 | 2019-09-26 | Same-layer meshing perforation method and device |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040107825A1 (en) * | 2002-12-05 | 2004-06-10 | Kash Edward C. | Well perforating gun |
| CN106761598A (en) * | 2016-12-15 | 2017-05-31 | 长春工业大学 | A kind of method of ignition for reducing perforation charge interference |
| CN207315333U (en) * | 2017-10-16 | 2018-05-04 | 西安石油大油气科技有限公司 | A kind of high energy multiple pulse perforating and fracturing device |
| CN106150445B (en) * | 2015-04-14 | 2018-09-21 | 大庆丹枫石油技术开发有限公司 | Two layers of layering perforation-zonal testing axle-linked cable-car of one-trip string and its operating method |
| CN109306857A (en) * | 2017-07-28 | 2019-02-05 | 中国石油天然气股份有限公司 | Selective layering perforation oil testing tubular column and method |
-
2019
- 2019-09-26 CN CN201910916122.8A patent/CN110630225A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040107825A1 (en) * | 2002-12-05 | 2004-06-10 | Kash Edward C. | Well perforating gun |
| CN106150445B (en) * | 2015-04-14 | 2018-09-21 | 大庆丹枫石油技术开发有限公司 | Two layers of layering perforation-zonal testing axle-linked cable-car of one-trip string and its operating method |
| CN106761598A (en) * | 2016-12-15 | 2017-05-31 | 长春工业大学 | A kind of method of ignition for reducing perforation charge interference |
| CN109306857A (en) * | 2017-07-28 | 2019-02-05 | 中国石油天然气股份有限公司 | Selective layering perforation oil testing tubular column and method |
| CN207315333U (en) * | 2017-10-16 | 2018-05-04 | 西安石油大油气科技有限公司 | A kind of high energy multiple pulse perforating and fracturing device |
Non-Patent Citations (2)
| Title |
|---|
| 王芝尧 等: "一趟管柱实现分层射孔和试油联作的思考", 《测井技术》 * |
| 马晓丽 等: "基于实现射孔参数高指标的重复射孔技术", 《中国矿业》 * |
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Application publication date: 20191231 |