CN112377136A - Speed pipe blanking plug opening method and speed pipe communication method - Google Patents
Speed pipe blanking plug opening method and speed pipe communication method Download PDFInfo
- Publication number
- CN112377136A CN112377136A CN202011260595.6A CN202011260595A CN112377136A CN 112377136 A CN112377136 A CN 112377136A CN 202011260595 A CN202011260595 A CN 202011260595A CN 112377136 A CN112377136 A CN 112377136A
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- Prior art keywords
- impact
- speed pipe
- speed
- blanking plug
- velocity
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B31/00—Fishing for or freeing objects in boreholes or wells
- E21B31/107—Fishing for or freeing objects in boreholes or wells using impact means for releasing stuck parts, e.g. jars
- E21B31/113—Fishing for or freeing objects in boreholes or wells using impact means for releasing stuck parts, e.g. jars hydraulically-operated
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B31/00—Fishing for or freeing objects in boreholes or wells
- E21B31/002—Destroying the objects to be fished, e.g. by explosive means
Abstract
The invention discloses a speed pipe blanking plug opening method and a speed pipe communication method, wherein the speed pipe blanking plug opening method comprises the following steps: and throwing an impact rod with preset weight into the speed pipe so as to utilize the impact force of the impact rod to break away the blanking plug in the speed pipe. The opening of the blanking plug is completed by adopting the impact rod, the high-pressure nitrogen making vehicle (or cement vehicle) is not used for pressing the speed pipe on site to cut off pins of the blanking plug, so that the cost and the operation matching time of renting the high-pressure nitrogen making vehicle (or cement vehicle) are saved, the pollution of high-pressure gas (liquid) entering a shaft to a reservoir is reduced, the reservoir protection of a gas well is realized, the operation cost can be saved by more than 30 percent in prediction, the operation time is reduced by more than 1 day, and the space and the benefit of the popularization and application of the speed pipe technology are greatly improved.
Description
Technical Field
The invention relates to the technical field of mining processes, in particular to a speed pipe blanking plug opening method and a speed pipe communication method.
Background
For a water producing gas well, the technology of drainage and gas production by using a velocity tube technology is the most economical, effective and continuous drainage and gas production technology. With the continuous production of the gas well, the gas production rate continuously decreases, the water production rate continuously increases, and the production string in the original production well does not meet the critical gas flow rate condition of gas carrying water production due to the large general diameter of the production string, and at the moment, a coiled tubing (commonly called as a velocity tube) with a small diameter is put into the original production string (tubing), so that the optimal process for maintaining gas carrying liquid, draining, gas production and continuous production of the gas well is formed.
The velocity tube technology is the first choice drainage gas production mode for gas-carrying water production of the gas well with low gas production rate and low water production rate. The currently common run-in process is: a blanking plug is arranged at the lower end of the speed pipe; running a speed pipe under the condition of no killing operation; hanging and cutting off the speed pipe column; injecting high-pressure gas or liquid into the speed pipe by using a high-pressure nitrogen making vehicle or a cement vehicle; and (4) pressurizing and shearing the plug pin, communicating the speed pipe with the oil pipe to form a gas production channel, and performing drainage and gas production. The defects of the process are as follows: 1. the high-pressure nitrogen making vehicle (or cement vehicle) is needed for communicating the speed pipe, the field popularization is greatly limited, and meanwhile, the cement vehicle injects water into the well, so that the reservoir stratum is possibly polluted; 2. the communication operation needs one day, the operation period is prolonged, and the operation cost is increased.
Disclosure of Invention
In view of the above, the first objective of the present invention is to provide a speed pipe plug opening method, which can effectively save the downhole cost of the speed pipe and greatly reduce the operation time. A second object of the present invention is to provide a velocity tube communication method including the above velocity tube plug opening method.
In order to achieve the first object, the invention provides the following technical scheme:
a speed tube plug opening method comprising the steps of:
and throwing an impact rod with preset weight into the speed pipe so as to utilize the impact force of the impact rod to break away the blanking plug in the speed pipe.
Preferably, in the above method for opening the speed tube plug, the two ends of the impact bar along the length thereof are an impact end and a tail end, respectively, and the hardness of the impact end is greater than that of the tail end.
Preferably, in the above method for opening the speed tube plug, the two ends of the impact bar along the length thereof are an impact end and a tail end, respectively, and the impact end is a convex spherical surface or a tip.
Preferably, in the above method for opening the velocity tube plug, the rod of the impact bar has a cylindrical shape.
Preferably, in the above method for opening the speed tube plug, the diameter of the impact bar is 2-4mm smaller than the inner diameter of the speed tube.
Preferably, in the above method for opening the speed tube stopper, the predetermined weight of the impact bar is 3 to 5 kg.
Preferably, in the method for opening a speed tube plug, the impact bar is thrown into the speed tube in a predetermined weight, and a throwing direction of the impact bar coincides with an axial direction of the speed tube.
A velocity tube communication method, comprising the steps of:
installing a hanger, a blowout preventer and an injection head;
installing a blanking plug at the bottom of the speed pipe;
gradually lowering the velocity tube into the well, and simultaneously injecting high-pressure liquid into the velocity tube;
after the speed pipe descends to a position, performing wellhead cutting, connecting the speed pipe with a hanger and a setting tool, and removing a blowout preventer and an injection head;
the method of rate pipe plug opening as claimed in any one of the preceding claims.
The invention provides a speed pipe blanking plug opening method, which comprises the following steps:
and throwing the impact rod with preset weight into the speed pipe so as to utilize the impact force of the impact rod to break the blanking plug in the speed pipe.
That is, after the velocity tube is lowered to the position and the installation is completed, the blanking plug needs to be opened to communicate the velocity tube with the oil tube. At the moment, the impact rod with preset weight is thrown into the speed pipe, the impact rod thrown into the speed pipe falls down under the action of self gravity and the speed is increased, the impact rod falls down along the speed pipe until the impact rod collides with the blanking plug, the blanking plug is flushed by the impact force of the impact rod, and finally the blanking plug is opened. Specifically, the impact bar collides with the plug to break the connecting pin of the plug, and the plug is opened.
By applying the method for opening the speed pipe blanking plug provided by the invention, the blanking plug is opened by adopting the impact rod, so that the situation that a high-pressure nitrogen vehicle (or a cement vehicle) is used for pressing the speed pipe to cut off a pin of the blanking plug is omitted on site, the cost and the operation matching time of renting the high-pressure nitrogen vehicle (or the cement vehicle) are saved, the pollution of high-pressure gas (liquid) entering a shaft to a reservoir is reduced, the reservoir protection of a gas well is realized, the operation cost can be reduced by more than 30 percent in prediction, the operation time is reduced by more than 1 day, and the space and the benefit of the popularization and application of the speed pipe technology are greatly improved.
In order to achieve the second object, the present invention further provides a method for communicating velocity tubes, wherein the method for communicating velocity tubes comprises any one of the methods for opening the velocity tube plug. Since the speed pipe blanking plug opening method has the technical effects, the speed pipe communication method with the speed pipe blanking plug opening method also has corresponding technical effects.
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, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic representation of a velocity tube downhole provided by an embodiment of the present invention;
FIG. 2 is a schematic illustration of a velocity tube in place downhole provided by an embodiment of the present invention;
FIG. 3 is a schematic diagram of an impact bar drop provided by an embodiment of the present invention;
FIG. 4 is a schematic diagram of the impact bar impacting the plug according to the embodiment of the present invention;
FIG. 5 is a schematic diagram of an impact bar according to an embodiment of the present invention after the impact bar has broken through a plug;
FIG. 6 is a schematic view of an impact bar provided in accordance with an embodiment of the present invention;
FIG. 7 is a schematic view of an impact bar provided in accordance with another embodiment of the present invention;
FIG. 8 is a schematic view of an impact bar provided in accordance with another embodiment of the present invention;
fig. 9 is a flowchart of a method for communicating speed pipes according to an embodiment of the present invention.
In fig. 1-9:
1-hanger, 2-speed pipe, 3-oil pipe, 4-plug, 5-reservoir and 6-impact rod.
Detailed Description
A first object of the present invention is to provide a velocity tube plug opening method which can effectively save the down-hole cost of velocity tubes and greatly reduce the working time. A second object of the present invention is to provide a velocity tube communication method including the above velocity tube plug opening method.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left" and "right", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the positions or elements referred to must have specific orientations, be constructed in specific orientations, and be operated, and thus are not to be construed as limitations of the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Referring to fig. 1-8, the method for opening a speed tube plug according to the present invention comprises the steps of:
the impact bar 6 of a predetermined weight is thrown into the velocity tube 2 to open the plug 4 in the velocity tube 2 by the impact force of the impact bar 6.
That is, after the velocity tube 2 is lowered into position and the installation is completed, the plug 4 needs to be opened to communicate the velocity tube 2 with the oil tube 3. At the moment, the impact rod 6 with the preset weight is thrown into the speed pipe 2, the impact rod 6 thrown into the speed pipe 2 drops under the action of self gravity and the speed is increased, the impact rod 6 drops along the speed pipe 2 until the impact rod 6 collides with the blanking plug 4, the blanking plug 4 is flushed by the impact force of the impact rod 6, and finally the blanking plug 4 is opened. Specifically, the impact bar 6 collides with the plug 4 to break the connecting pin of the plug 4, and the plug 4 is opened.
By applying the method for opening the speed pipe 2 and the blanking plug 4 provided by the invention, the blanking plug 4 is opened by adopting the impact rod 6, so that the situation that a high-pressure nitrogen vehicle (or a cement vehicle) is used for pressing the speed pipe 2 to cut off the pin of the blanking plug 4 is eliminated on site, the matching time of the expense for renting the high-pressure nitrogen vehicle (or the cement vehicle) and the operation is saved, the pollution of high-pressure gas (liquid) entering a shaft to the reservoir 5 is reduced, the reservoir 5 of a gas well is protected, the operation expense can be saved by more than 30 percent, the operation time is reduced by more than 1 day, and the space and the benefit for the technical popularization and application of the speed pipe 2 are greatly improved.
The two ends of the impact bar 6 along its length are the impact end and the tail end respectively. And the impact rod 6 is thrown into the speed pipe 2, the impact end of the impact rod 6 faces downwards to the bottom of the speed pipe 2, and the tail end of the impact rod 6 faces upwards.
In a specific embodiment, the hardness of the impact end of the impact bar 6 is greater than the hardness of the tip. So set up, prevented that the impact end of impact bar 6 from taking place to warp, guaranteed that the impact end of impact bar 6 has enough impact force when colliding with blanking plug 4. Specifically, the impact end of the impact bar 6 may be made of an alloy material, and is not limited herein.
In addition, as shown in fig. 6-8, the striking end is a convex spherical surface, or the striking end is a pointed end, so that the striking end is arranged to have a larger striking force when colliding with the stopper 4. Of course, the impact end may be a plane, which is not limited herein.
The end surface of the impact end is smaller than the cross section of the rod body of the impact rod 6 so as to ensure that the impact force is larger when the impact end collides with the blanking plug 4.
The body of the impact bar 6 may be cylindrical. Specifically, the diameter of the impact bar 6 is 2-4mm smaller than the inner diameter of the velocity tube 2. So that there is a small clearance between the impact bar 6 and the inner wall of the velocity tube 2.
Of course, the striking rod 6 may also be polygonal column-shaped, and is not limited herein.
In another embodiment, the predetermined weight of the impact bar 6 is 3-5 kg. Specifically, the weight of the impact bar 6 may be set according to the type of the speed pipe 2 and the plug 4, and is not particularly limited herein.
In order to prevent the impact bar 6 from rubbing against the inner wall of the speed pipe 2, in the step of putting the impact bar 6 of a predetermined weight into the speed pipe 2, the putting direction of the impact bar 6 coincides with the axial direction of the speed pipe 2. So guaranteed the impact bar 6 along the axial tenesmus of velocity tube 2, prevented that the off tracking of impact bar 6 from taking place the friction with the inner wall of velocity tube 2.
As shown in fig. 9, based on the speed pipe 2 plug 4 opening method provided in the above embodiment, the present invention also provides a speed pipe 2 communication method, which includes the steps of:
s1: installing a hanger 1, a blowout preventer and an injection head;
in order to facilitate the installation of the hanger 1, the blowout preventer and the injection head, the accessories of the wellhead gas production tree can be removed before installation, and then the hanger 1, the blowout preventer and the injection head are installed in sequence.
S2: a blanking plug 4 is arranged at the bottom of the speed pipe 2;
before the speed pipe 2 is lowered, a plug 4 is mounted on the bottom of the speed pipe 2.
S3: gradually lowering the velocity tube 2 into the well, and simultaneously injecting high-pressure liquid into the velocity tube 2;
after the blanking plug 4 is installed, the velocity tube 2 is gradually lowered into the well, and high-pressure liquid is injected into the velocity tube 2. Wherein, the high-pressure liquid is injected into the speed pipe 2 to prevent the plug 4 from moving upwards under the action of high pressure in the well. I.e. without killing the well, the resulting pipe is run into the well, this process being a pressured operation.
S4: after the speed pipe 2 descends to the right position, performing wellhead cutting, connecting the speed pipe 2 with the hanger 1 and a setting tool, and removing the blowout preventer and the injection head;
and cutting the wellhead position of the speed pipe 2 after the speed pipe 2 descends to the proper position, namely cutting the upper end of the speed pipe 2 after the speed pipe 2 descends to the proper position. The speed tube 2 is then connected with the hanger 1 and the setting tool.
And rotating the compression bolt on the hanger 1 at a constant speed until the self weight of the instrument display speed pipe 2 is zero, and then setting the hanger 1 on the oil pipe 3 to finish the suspension of the speed pipe 2.
And (3) removing the blowout preventer and the injection head, recovering a gas production tree and the like, and installing the gas production tree on the upper part of the hanger 1 to complete the installation work of a gas production wellhead and meet the production operation requirements.
S5: the impact bar 6 of a predetermined weight is thrown into the velocity tube 2 to open the plug 4 in the velocity tube 2 by the impact force of the impact bar 6.
The impact rod 6 with preset weight is thrown into the speed pipe 2, the impact rod 6 thrown into the speed pipe 2 falls down under the action of self gravity and the speed is increased, the impact rod 6 falls down along the speed pipe 2 until the impact rod 6 collides with the blanking plug 4, the blanking plug 4 is flushed by the impact force of the impact rod 6, and finally the blanking plug 4 is opened. Specifically, the impact bar 6 collides with the plug 4 to break the connecting pin of the plug 4, and the plug 4 is opened.
Since the speed pipe 2 communicating method adopts the speed pipe 2 blanking plug 4 opening method in the above embodiment, please refer to the above embodiment for the beneficial effect of the speed pipe 2 communicating method.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Claims (8)
1. A method of speed tube plug opening comprising the steps of:
and throwing an impact rod (6) with preset weight into the speed pipe (2) to break the blanking plug (4) in the speed pipe (2) by utilizing the impact force of the impact rod (6).
2. The velocity tube plug opening method according to claim 1, characterized in that the two ends of the impact bar (6) along its length are an impact end and a tip end, respectively, the impact end having a hardness greater than the tip end.
3. The velocity tube plug opening method according to claim 1, characterized in that the impact bar (6) is an impact end and a tip end along its length, respectively, the impact end being a convex sphere or a tip.
4. The velocity tube plug opening method according to claim 3, characterized in that the rod body of the impact rod (6) is cylindrical.
5. The velocity tube plug opening method according to claim 4, characterized in that the diameter of the impact bar (6) is 2-4mm smaller than the inner diameter of the velocity tube (2).
6. The speed tube plug opening method according to claim 1, characterized in that the preset weight of the striker rod (6) is 3-5 kg.
7. The method according to claim 1, wherein the impact bar (6) is thrown into the velocity tube (2) in a predetermined weight, and the direction of the throw of the impact bar (6) coincides with the axial direction of the velocity tube (2).
8. A method of communicating velocity tubes, comprising the steps of:
installing a hanger (1), a blowout preventer and an injection head;
a blanking plug (4) is arranged at the bottom of the speed pipe (2);
gradually lowering the velocity tube (2) into the well, and simultaneously injecting high-pressure liquid into the velocity tube (2);
after the speed pipe (2) descends to the proper position, performing wellhead cutting, connecting the speed pipe (2) with the hanger (1) and the setting tool, and removing the blowout preventer and the injection head;
the method of any one of claims 1-7 for rate tube plug opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011260595.6A CN112377136A (en) | 2020-11-12 | 2020-11-12 | Speed pipe blanking plug opening method and speed pipe communication method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011260595.6A CN112377136A (en) | 2020-11-12 | 2020-11-12 | Speed pipe blanking plug opening method and speed pipe communication method |
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| CN112377136A true CN112377136A (en) | 2021-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011260595.6A Pending CN112377136A (en) | 2020-11-12 | 2020-11-12 | Speed pipe blanking plug opening method and speed pipe communication method |
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Citations (7)
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|---|---|---|---|---|
| US4182419A (en) * | 1978-09-29 | 1980-01-08 | Yeates Robert D | Downhole surge tools |
| CN202338257U (en) * | 2011-11-07 | 2012-07-18 | 中国石油天然气股份有限公司 | Seal and suspension integrated wellhead device for coiled tubing capable of gas recovery by water discharge |
| CN205025440U (en) * | 2015-09-18 | 2016-02-10 | 中国石油天然气股份有限公司 | Flowing back gas production controlling means |
| CN108252683A (en) * | 2018-02-12 | 2018-07-06 | 新疆石油管理局有限公司准东勘探开发分公司 | Double sliding sleeve switch devices |
| CN108999597A (en) * | 2018-08-10 | 2018-12-14 | 中国石油化工股份有限公司江汉油田分公司石油工程技术研究院 | A kind of center completion tubular column and gaslift construction method for gaslift production |
| CN111364936A (en) * | 2020-04-09 | 2020-07-03 | 中国石油天然气股份有限公司 | Speed tubular column sealing suspension device with auxiliary sealing and sealing method |
| CN111720086A (en) * | 2020-07-08 | 2020-09-29 | 中国石油天然气集团有限公司 | Impact type pipe end plugging device and using method |
-
2020
- 2020-11-12 CN CN202011260595.6A patent/CN112377136A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4182419A (en) * | 1978-09-29 | 1980-01-08 | Yeates Robert D | Downhole surge tools |
| CN202338257U (en) * | 2011-11-07 | 2012-07-18 | 中国石油天然气股份有限公司 | Seal and suspension integrated wellhead device for coiled tubing capable of gas recovery by water discharge |
| CN205025440U (en) * | 2015-09-18 | 2016-02-10 | 中国石油天然气股份有限公司 | Flowing back gas production controlling means |
| CN108252683A (en) * | 2018-02-12 | 2018-07-06 | 新疆石油管理局有限公司准东勘探开发分公司 | Double sliding sleeve switch devices |
| CN108999597A (en) * | 2018-08-10 | 2018-12-14 | 中国石油化工股份有限公司江汉油田分公司石油工程技术研究院 | A kind of center completion tubular column and gaslift construction method for gaslift production |
| CN111364936A (en) * | 2020-04-09 | 2020-07-03 | 中国石油天然气股份有限公司 | Speed tubular column sealing suspension device with auxiliary sealing and sealing method |
| CN111720086A (en) * | 2020-07-08 | 2020-09-29 | 中国石油天然气集团有限公司 | Impact type pipe end plugging device and using method |
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| 李剑秋等: "连续管速度管柱带压起管工艺在川渝地区的应用", 《焊管》 * |
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Application publication date: 20210219 |