CN108252684A - Production set administering method with pressure with skill set well head annular space and its device in gas well - Google Patents
Production set administering method with pressure with skill set well head annular space and its device in gas well Download PDFInfo
- Publication number
- CN108252684A CN108252684A CN201711442475.6A CN201711442475A CN108252684A CN 108252684 A CN108252684 A CN 108252684A CN 201711442475 A CN201711442475 A CN 201711442475A CN 108252684 A CN108252684 A CN 108252684A
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- China
- Prior art keywords
- annular space
- hose
- sleeve pipe
- described sleeve
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 38
- 239000007788 liquid Substances 0.000 claims abstract description 45
- 238000009434 installation Methods 0.000 claims abstract description 33
- 239000002699 waste material Substances 0.000 claims abstract description 23
- 239000011083 cement mortar Substances 0.000 claims abstract description 18
- 238000004140 cleaning Methods 0.000 claims abstract description 18
- 239000012530 fluid Substances 0.000 claims abstract description 18
- 239000000565 sealant Substances 0.000 claims abstract description 18
- 230000005494 condensation Effects 0.000 claims description 3
- 238000009833 condensation Methods 0.000 claims description 3
- 238000005553 drilling Methods 0.000 abstract description 4
- 239000003208 petroleum Substances 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 39
- 239000004615 ingredient Substances 0.000 description 9
- 239000004568 cement Substances 0.000 description 8
- 238000007789 sealing Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 241001465382 Physalis alkekengi Species 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006011 modification reaction Methods 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 239000003209 petroleum derivative Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 231100000614 Poison Toxicity 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000000750 progressive Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000000630 rising Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000002588 toxic Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- E21B37/00—Methods or apparatus for cleaning boreholes or wells
-
- 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/16—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor using gaseous fluids
-
- 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices, or the like
Abstract
The invention discloses a kind of administering method with pressure with skill set well head annular space of production set in gas well and its devices, are related to petroleum drilling engineering field, and production set includes the following steps with skill set well head annular space administering method with pressure in the gas well：Hose is stretched to from casing head gate in casing annulus；One end of hose outside described sleeve pipe annular space is connected into pump installation；After the hose is stretched in described sleeve pipe annular space, start the pump installation and replace out the waste liquid in described sleeve pipe annular space；After waste liquid replaces out in described sleeve pipe annular space, one end of the hose outside described sleeve pipe annular space is connected into air pump；Start the air pump and gas is pumped into described sleeve pipe annular space so as to which the cleaning solution in described sleeve pipe annular space be replaced out；One end of hose outside described sleeve pipe annular space is connected into pump installation, starts the pump installation and is pumped into cement mortar and fluid sealant into described sleeve pipe annular space.The application can solve the problems, such as that well head annular space is with pressure.
Description
Technical field
The present invention relates to petroleum drilling engineering field, production set and skill set well head annular space are with pressure in more particularly to a kind of gas well
Administering method and its device.
Background technology
In petroleum gas drilling, since the variation of temperature and pressure in cementing quality problem and operation causes to cement the well
Cement sheath cement plane generates gap, and natural gas is covered from bottom reservoir or at tubing string leakage along production and skill lantern ring space cement
It is altered in circumferential weld gap to well head, wellhead casing pipe annular space is caused to build the pressure, which is common in production set and skill lantern ring space.Inner room pressure can increase
Plus-pressure monitors the cost bled off pressure with well head, can also aggravate the corrosion of casing, can also cause high-pressure gas well out of control, toxic when serious
The problem of poisonous gas leakage and influence oil/gas well service life.
Since the construction of natural gas fields, more than 80% high-pressure gas well is all asked there are well head annular space is with pressure in recovery process
Topic, this always affects and threatens the safety in production in gas field.At present there are mainly two types of well head annular space processing methods with pressure：It is a kind of
Be by casing head of well head take over line bled off pressure, which can only mitigate well head pressure in the short time, it is therefore desirable to pass through
Often repeat to bleed off pressure work, in this way, add additional cost of labor, while can not also cut off inner room and calm the anger source channels and solution
Corrosion of the inner room pressure to well head.Second is to be blocked by casing head of well head to the strong squeeze method of casing annulus.To closed loop
Empty squeeze method needs higher operation pressure, but is limited again by the specified bearing capacity of wellhead assembly, and operation pressure was not easy
Height so causes the cement amount squeezed into limited, and it is relatively low to block success rate.
Inner room pressure threatens the safety of well head at any time, closing well operation can only be carried out when serious, this substantially reduces oil/gas well
Service life, therefore, there is an urgent need for a kind of improvement inner rooms at scene to press and extends the technical method in oil/gas well service life.
Invention content
In order to overcome the drawbacks described above of the prior art, the technical problem to be solved is that provide one kind for the embodiment of the present invention
Production set administering method with pressure with skill set well head annular space and its device, can solve the problems, such as that well head annular space is with pressure in gas well.
The specific technical solution of the embodiment of the present invention is：
Production set covers well head annular space administering method with pressure with skill in a kind of gas well, and production set covers well head ring with skill in the gas well
Empty administering method with pressure includes the following steps：
Hose is stretched to from casing head gate in casing annulus；
One end of hose outside described sleeve pipe annular space is connected into pump installation；
After the hose is stretched in described sleeve pipe annular space, start the pump installation by the waste liquid in described sleeve pipe annular space
It replaces out；
After waste liquid replaces out in described sleeve pipe annular space, one end of the hose outside described sleeve pipe annular space is connected into air pump；
Start the air pump and gas is pumped into described sleeve pipe annular space so as to which the cleaning solution in described sleeve pipe annular space be replaced out；
One end of hose outside described sleeve pipe annular space is connected into pump installation, starts the pump installation to described sleeve pipe ring
Cement mortar and fluid sealant are pumped into sky.
In a preferred embodiment, hose is inserted from casing head gate stretching in casing annulus described
The step of in, the hose is inserted into deep-controlled within 30 meters in described sleeve pipe annular space.
In a preferred embodiment, production set is also wrapped with skill set well head annular space administering method with pressure in the gas well
Include following steps：
When the cleaning solution in described sleeve pipe annular space being replaced out with gas, measure the liquid measure of discharge liquor, so as to according to liquid measure
The depth that casing annulus replaces out liquid is calculated, adjustment hose depth of setting is consistent with the depth that casing annulus replaces out liquid.
In a preferred embodiment, the hose is stretched to by hose conveyer in casing annulus, positioned at institute
The one end for stating the hose outside casing annulus is connected with connector.
In a preferred embodiment, start the pump installation be alternately pumped into described sleeve pipe annular space cement mortar and
Fluid sealant.
In a preferred embodiment, the pump installation is included for row's pump.
In a preferred embodiment, described sleeve pipe head gate is connected by discharge pipe with waste liquid metering pool.
In a preferred embodiment, cement mortar and close is pumped into described sleeve pipe annular space starting the pump installation
Sealing closes casing head gate to full of after described sleeve pipe annular space, treats cement mortar and fluid sealant condensation.
In a preferred embodiment, open casing head gate with to being bled off pressure in casing annulus, by hose from
It is stretched in casing annulus in casing head gate.
Production set and the gas used in skill set well head annular space administering method with pressure in a kind of any of the above-described gas well
Production set covers well head annular space controlling device with pressure with skill in well, including：
Hose conveyer is arranged with hose on the hose conveyer, and one end of the hose is connected with connector；
The waste liquid metering pool that can be connected with described sleeve pipe head gate, the waste liquid metering pool can collect liquid and to liquid
The volume of body is measured；
What can be connected with the connector of the hose pumps for row；
The air pump that can be connected with the connector of the hose.
Technical scheme of the present invention has following notable advantageous effect：
Production set and skill set well head annular space administering method construction technology with pressure are simple in gas well in the application, whole process
It all realizes on ground, without underground work, is conveniently operated.Meanwhile it can be cement to use cleaning solution cleaning and gas drain
Slurry, fluid sealant and casing wall are cementing more preferable, and sealing is more reliable.The application can solve existing gas well in current world wide
Annular space phenomenon with pressure, and without large-scale cementing equipment, operating expenses is at low cost, and promotion prospect is wide, and there is significant economy to imitate
Benefit.
With reference to following explanation and attached drawing, only certain exemplary embodiments of this invention is disclosed in detail, specifies the original of the present invention
Reason can be in a manner of adopted.It should be understood that embodiments of the present invention are not so limited in range.In appended power
In the range of the spirit and terms of profit requirement, embodiments of the present invention include many changes, modifications and are equal.For a kind of reality
The feature that the mode of applying is described and/or shown can be made in a manner of same or similar in one or more other embodiments
With, with the feature in other embodiment it is combined or substitute other embodiment in feature.
Description of the drawings
Attached drawing described here is only used for task of explanation, and is not intended to limit model disclosed by the invention in any way
It encloses.In addition, shape and proportional sizes of each component in figure etc. are only schematical, the understanding of the present invention is used to help, and
It is not the specific shape and proportional sizes for limiting each component of the present invention.Those skilled in the art under the teachings of the present invention, can
Implement the present invention to select various possible shapes and proportional sizes as the case may be.
Fig. 1 is that production set and the operation of skill set well head annular space administering method with pressure are illustrated in gas well in the embodiment of the present invention
Figure.
Fig. 2 is that production set covers the flow chart of well head annular space administering method with pressure with skill in gas well in the embodiment of the present invention.
The reference numeral of the figures above：
1st, casing head gate；2nd, casing annulus；3rd, hose；4th, hose conveyer；5th, connector；6th, discharge pipe；7th, waste liquid
Metering pool；8th, air pump；9th, pump installation.
Specific embodiment
With reference to the drawings and the description of the specific embodiments of the present invention, the details of the present invention can clearly be understood.But
It is the specific embodiment of invention described herein, is only used for explaining the purpose of the present invention, and cannot understands in any way
Into being limitation of the present invention.Under the teachings of the present invention, technical staff is contemplated that the arbitrary possible change based on the present invention
Shape, these are regarded as belonging to the scope of the present invention.It should be noted that when element is referred to as " being set to " another yuan
Part, it can be directly on another element or there may also be elements placed in the middle.When an element is considered as " connection "
Another element, it can be directly to another element or may be simultaneously present centering elements.Term " installation ",
" connected ", " connection " should be interpreted broadly, for example, it may be inside mechanical connection or electrical connection or two elements
Connection, can be directly connected, can also be indirectly connected by intermediary, for the ordinary skill in the art,
The concrete meaning of above-mentioned term can be understood as the case may be.Term as used herein " vertical ", " horizontal ",
For illustrative purposes only, it is unique embodiment to be not offered as " on ", " under ", "left", "right" and similar statement.
Unless otherwise defined, all of technologies and scientific terms used here by the article and belong to the technical field of the application
The normally understood meaning of technical staff is identical.The term used in the description of the present application is intended merely to description tool herein
The purpose of the embodiment of body, it is not intended that in limitation the application.Term as used herein "and/or" includes one or more
The arbitrary and all combination of relevant Listed Items.
In order to solve the problems, such as that well head annular space is with pressure, production set in a kind of gas well is proposed in this application and covers well with skill
The empty administering method with pressure of choma, Fig. 1 are that production set covers well head annular space improvement side with pressure with skill in gas well in the embodiment of the present invention
The operation schematic diagram of method, Fig. 2 are that production set covers the stream of well head annular space administering method with pressure with skill in gas well in the embodiment of the present invention
Cheng Tu, as shown in Figure 1 and Figure 2, production set includes the following steps with skill set well head annular space administering method with pressure in gas well：
S101：Hose is stretched to from casing head gate in casing annulus.
In petroleum gas drilling, since the variation of temperature and pressure in cementing quality problem and operation leads to water of cementing the well
Mud ring cement plane generates gap, and the gas overflowing in gap can cause wellhead casing pipe annular space to build the pressure, and serious threat the service life of gas well.
When inner room pressure, which occurs, in well head to be administered, casing head gate is opened to being bled off pressure in casing annulus, to pass through hose
Conveyer stretches to hose in casing annulus from casing head gate.In general, in hose substantially plug-in-sleeve annular space
Depth can be controlled within 30 meters.Hose can be high pressure resistant hose, can select the resistance to height of outer diameter 16mm, internal diameter 6mm
Press hose.
S102：One end of hose outside casing annulus is connected into pump installation.
In this step, one end of the hose outside casing annulus can be connected with connector, by the connector and pump installation
It is connected, it is however generally that, preferentially selection pumps pump installation for row.
S103：After hose is stretched in casing annulus, start pump installation and replace out the waste liquid in casing annulus；
In this step, after hose is stretched in casing annulus, start pump installation, by pump installation into casing annulus
Cleaning solution is pumped into, cleaning solution comes out waste liquid in casing annulus from displacement in casing head gate, by cleaning repeatedly, so as to cover
The complete displacement of the aerial waste liquid of pipe ring comes out, at this point, being essentially cleaning solution in casing annulus.
S104：After waste liquid replaces out in casing annulus, one end of the hose outside casing annulus is connected into air pump.
In this step, after waste liquid replaces out in casing annulus, pump installation is located to one of the hose outside casing annulus certainly
It is disassembled on the connector at end, by the upper air pump of connector connection of one end of the hose outside casing annulus.
S105：Booster air pump is pumped into gas into casing annulus so as to which the cleaning solution in casing annulus be replaced out.
In this step, booster air pump is pumped into gas into casing annulus so as to which the cleaning solution in casing annulus be replaced out,
So that gassy in casing annulus.
S106：When the cleaning solution in casing annulus being replaced out with gas, measure the liquid measure of discharge liquor, so as to according to liquid measure
The depth that casing annulus replaces out liquid is calculated, adjustment hose depth of setting is consistent with the depth that casing annulus replaces out liquid.
In this step, casing head gate can be connected by discharge pipe with waste liquid metering pool.It will be covered with gas
When the aerial cleaning solution of pipe ring replaces out, cleaning solution flow to waste liquid metering pool from casing head gate by discharge pipe, passes through waste liquid
Metering pool measures the liquid measure of discharge liquor, so as to replace out the depth of liquid according to liquid measure calculating casing annulus, then adjusts under hose
It is consistent with the depth that casing annulus replaces out liquid to enter depth.By the above-mentioned means, being pumped into cement mortar and close into casing annulus
During sealing, cement mortar and fluid sealant can be caused fully to pour into casing annulus.
S107：One end of hose outside casing annulus is connected into pump installation, starts pump installation and is pumped into casing annulus
Enter cement mortar and fluid sealant.
In this step, the connector of one end of the hose outside casing annulus is reconnected into pump installation, starts pump installation
Cement mortar and fluid sealant are pumped into casing annulus.In a preferred embodiment, start pump installation alternately to sleeve ring
Cement mortar and fluid sealant are pumped into sky, alternating is pumped into cement mortar and fluid sealant can cause cement mortar and fluid sealant and casing wall glue
Knot is more preferable, and sealing is more reliable.Cement mortar and fluid sealant are pumped into casing annulus to after full of casing annulus starting pump installation,
Casing head gate is closed, treats cement mortar and fluid sealant condensation, so as to cut off oil gas rising passway, eliminates showing for well head inner room pressure
As.
In order to which production set in gas well is coordinated to cover well head annular space administering method with pressure with skill, one kind also proposed in this application
Production set covers well head annular space controlling device with pressure with skill in gas well, as shown in Figure 1, production set and skill set well head annular space are with pressure in gas well
Controlling device can include：Hose conveyer is arranged with hose on hose conveyer, and one end of hose is connected with connector；Energy
The waste liquid metering pool being connected with casing head gate, waste liquid metering pool can collect liquid and the volume of liquid measured；
What can be connected with the connector of hose pumps for row；The air pump that can be connected with the connector of hose.
Production set and skill set well head annular space administering method construction technology with pressure are simple in gas well in the application, whole process
It all realizes on ground, without underground work, is conveniently operated.Meanwhile it can be cement to use cleaning solution cleaning and gas drain
Slurry, fluid sealant and casing wall are cementing more preferable, and sealing is more reliable.The application can solve existing gas well in current world wide
Annular space phenomenon with pressure, and without large-scale cementing equipment, operating expenses is at low cost, and promotion prospect is wide, and there is significant economy to imitate
Benefit.
All articles and reference disclosed, including patent application and publication, for various purposes by quoting knot
Together in this.Identified element, ingredient, component or step and reality should be included by describing the term " substantially by ... form " of combination
Other elements, ingredient, component or the step of the basic novel feature of the combination are not influenced in matter.Using term "comprising" or
" comprising " describes the combination of element here, ingredient, component or step it is also contemplated that substantially by these elements, ingredient, component
Or the embodiment that step is formed.Here by using term " can with ", it is intended to it is described any to illustrate that " can with " includes
Attribute is all optional.Multiple element, ingredient, component or step can be carried by single integrated component, ingredient, component or step
For.Alternatively, single integrated component, ingredient, component or step can be divided into multiple element, ingredient, component or the step of separation
Suddenly.Open "a" or "an" for describing element, ingredient, component or step do not say in order to exclude other elements, into
Point, component or step.
Each embodiment in this specification is described by the way of progressive, the highlights of each of the examples are with
The difference of other embodiment, just to refer each other for identical similar part between each embodiment.Above-described embodiment is only
Illustrate the technical concepts and features of the present invention, its object is to allow person skilled in the art that can understand present disclosure
And implement according to this, it is not intended to limit the scope of the present invention.All equivalence changes made according to spirit of the invention
Or modification, it should be covered by the protection scope of the present invention.
Claims (10)
1. in a kind of gas well production set with skill cover well head annular space administering method with pressure, which is characterized in that in the gas well production set with
Skill set well head annular space administering method with pressure includes the following steps：
Hose is stretched to from casing head gate in casing annulus；
One end of hose outside described sleeve pipe annular space is connected into pump installation；
After the hose is stretched in described sleeve pipe annular space, start the pump installation and replace the waste liquid in described sleeve pipe annular space
Go out；
After waste liquid replaces out in described sleeve pipe annular space, one end of the hose outside described sleeve pipe annular space is connected into air pump；
Start the air pump and gas is pumped into described sleeve pipe annular space so as to which the cleaning solution in described sleeve pipe annular space be replaced out；
One end of hose outside described sleeve pipe annular space is connected into pump installation, starts the pump installation into described sleeve pipe annular space
It is pumped into cement mortar and fluid sealant.
2. production set covers well head annular space administering method with pressure with skill in gas well according to claim 1, which is characterized in that
Described to be inserted from stretching in the step in casing annulus in casing head gate by hose, the hose is inserted into described sleeve pipe annular space
In it is deep-controlled within 30 meters.
3. production set covers well head annular space administering method with pressure with skill in gas well according to claim 1, which is characterized in that institute
It is further comprising the steps of to state production set and skill set well head annular space administering method with pressure in gas well：
When the cleaning solution in described sleeve pipe annular space being replaced out with gas, measure the liquid measure of discharge liquor, so as to be calculated according to liquid measure
Casing annulus replaces out the depth of liquid, and adjustment hose depth of setting is consistent with the depth that casing annulus replaces out liquid.
4. production set covers well head annular space administering method with pressure with skill in gas well according to claim 1, which is characterized in that institute
It states hose to stretch in casing annulus by hose conveyer, one end of the hose outside described sleeve pipe annular space, which is connected with, to be connect
Head.
5. production set covers well head annular space administering method with pressure with skill in gas well according to claim 1, which is characterized in that opens
The dynamic pump installation is alternately pumped into cement mortar and fluid sealant into described sleeve pipe annular space.
6. production set covers well head annular space administering method with pressure with skill in gas well according to claim 1, which is characterized in that institute
Pump installation is stated to include for row's pump.
7. production set covers well head annular space administering method with pressure with skill in gas well according to claim 1, which is characterized in that institute
Casing head gate is stated by discharge pipe with waste liquid metering pool to be connected.
8. production set covers well head annular space administering method with pressure with skill in gas well according to claim 1, which is characterized in that
Start the pump installation and cement mortar and fluid sealant are pumped into described sleeve pipe annular space to full of after described sleeve pipe annular space, close casing
Head gate treats cement mortar and fluid sealant condensation.
9. production set covers well head annular space administering method with pressure with skill in gas well according to claim 1, which is characterized in that beats
Casing head gate is opened so as to being bled off pressure in casing annulus, hose is stretched to from casing head gate in casing annulus.
10. production set and the gas used in skill set well head annular space administering method with pressure in a kind of gas well described in claim 1
Production set covers well head annular space controlling device with pressure with skill in well, which is characterized in that including：
Hose conveyer is arranged with hose on the hose conveyer, and one end of the hose is connected with connector；
The waste liquid metering pool that can be connected with described sleeve pipe head gate, the waste liquid metering pool can collect liquid and to liquid
Volume is measured；
What can be connected with the connector of the hose pumps for row；
The air pump that can be connected with the connector of the hose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711442475.6A CN108252684A (en) | 2017-12-27 | 2017-12-27 | Production set administering method with pressure with skill set well head annular space and its device in gas well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711442475.6A CN108252684A (en) | 2017-12-27 | 2017-12-27 | Production set administering method with pressure with skill set well head annular space and its device in gas well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108252684A true CN108252684A (en) | 2018-07-06 |
Family
ID=62722996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711442475.6A Pending CN108252684A (en) | 2017-12-27 | 2017-12-27 | Production set administering method with pressure with skill set well head annular space and its device in gas well |
Country Status (1)
| Country | Link |
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| CN (1) | CN108252684A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102953711A (en) * | 2012-11-28 | 2013-03-06 | 西南石油大学 | Device and method for horizontal gas well to drain liquid and produce gas |
| CN105156084A (en) * | 2015-08-26 | 2015-12-16 | 中国石油天然气股份有限公司 | Drainage device for accumulated liquid in annular space |
| CN106761568A (en) * | 2017-03-10 | 2017-05-31 | 中国石油大学(北京) | One kind administers gas well annular space method with pressure |
| CN106928947A (en) * | 2017-03-28 | 2017-07-07 | 诺斯石油工具(天津)有限公司 | The plugging material of annular space, plugging device and method for blocking between a kind of sleeve pipe |
-
2017
- 2017-12-27 CN CN201711442475.6A patent/CN108252684A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102953711A (en) * | 2012-11-28 | 2013-03-06 | 西南石油大学 | Device and method for horizontal gas well to drain liquid and produce gas |
| CN105156084A (en) * | 2015-08-26 | 2015-12-16 | 中国石油天然气股份有限公司 | Drainage device for accumulated liquid in annular space |
| CN106761568A (en) * | 2017-03-10 | 2017-05-31 | 中国石油大学(北京) | One kind administers gas well annular space method with pressure |
| CN106928947A (en) * | 2017-03-28 | 2017-07-07 | 诺斯石油工具(天津)有限公司 | The plugging material of annular space, plugging device and method for blocking between a kind of sleeve pipe |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Li Wanjun Inventor after: Jing Ning Inventor after: Ji Fei Inventor after: Wu Yuhang Inventor after: Zhang Huabei Inventor after: Tong Zhen Inventor after: Lin Yuntao Inventor after: Duan Dexiang Inventor after: Wang Gang Inventor after: Yan Jun Inventor after: Luo Huihong Inventor after: Luo Huaidong Inventor after: Wang Yanfeng Inventor after: Wang Junfeng Inventor after: Gu Yixin Inventor before: Li Wanjun Inventor before: Jing Ning Inventor before: Ji Fei Inventor before: Wu Yuhang Inventor before: Zhang Huabei Inventor before: Tong Zhen Inventor before: Lin Yuntao Inventor before: Duan Dexiang Inventor before: Wang Gang Inventor before: Yan Jun Inventor before: Luo Huihong Inventor before: Luo Huaidong Inventor before: Wang Yanfeng Inventor before: Wang Junfeng Inventor before: Gu Yixin |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180706 |