CN211008514U - Slurry separator and drilling system - Google Patents
Slurry separator and drilling system Download PDFInfo
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- CN211008514U CN211008514U CN201921750892.1U CN201921750892U CN211008514U CN 211008514 U CN211008514 U CN 211008514U CN 201921750892 U CN201921750892 U CN 201921750892U CN 211008514 U CN211008514 U CN 211008514U
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Abstract
The utility model provides a divide thick liquid ware and drilling system for solve among the prior art well head sealed and go out the problem of thick liquid. The utility model provides a slurry separator, include: the upper end and the lower end of the sleeve are provided with ring plates close to the inner side along the circumferential edge; the expansion core is made of rubber and comprises an arc-shaped arch ring, the arc-shaped arch ring protrudes towards one side of the center line of the sleeve, a hydraulic channel is formed between the concave side of the arc-shaped arch ring and the inner wall of the sleeve, and two ends of the arc-shaped arch ring are clamped on the inner side of the ring plate respectively; a hydraulic port is formed in the side wall of the sleeve, the hydraulic port is used for introducing hydraulic fluid into the hydraulic channel and discharging the hydraulic fluid in the hydraulic channel, and the hydraulic fluid in the hydraulic channel can expand and deform the arc-shaped arch ring part; the lower end of the sleeve is provided with a connecting cylinder, and the side wall of the connecting cylinder is provided with a slurry distributing port. The wellhead sealing and slurry separation can be realized.
Description
Technical Field
The utility model relates to a well drilling field especially relates to a thick liquid ware and drilling system divide.
Background
In the drilling process, the drilling rod is hollow structure, and the drilling rod is at the drilling process, need let in mud to the drilling rod in, mud hardens the wellhole inner wall, after having bored a termination hole, still need the sleeve on the drilling rod, found a section of thick bamboo inner wall and drilling rod outer wall interval setting, found a section of thick bamboo outer wall and the contact of wellhole inner wall, mud upwards gushes out from the space between a section of thick bamboo and the drilling rod outer wall that stands, how to realize sealed between drilling rod outer wall and the section of thick bamboo inner wall that stands to the speed that control mud gushes out becomes important factor.
The stratum pressure is larger than the annulus pressure due to the exciting pressure generated by drilling, the too low density of drilling fluid, the abnormal stratum pressure and the like, so that the stratum gas invades the bottom of the well and the gas invasion occurs. Under any working condition, when gas invasion occurs, negative pressure difference exists between the annular space and the stratum, if the gas invasion is not detected in time and effective measures are taken, the negative pressure difference between the annular space and the stratum is further increased along with the migration of gas to a wellhead, so that the gas invasion is intensified and further worsened, and accidents such as blowout and the like are easily induced. Conventionally, gas invasion occurs downhole or at the shoe, but when drilling in exceptionally complex formations, gas invasion may occur anywhere in the open hole section. From the aspect of well drilling safety, the earlier the gas invasion is found, the better the gas invasion position is, the more beneficial the effective measures are taken to restrain the gas invasion, the occurrence of blowout accidents is fundamentally avoided, and the normal operation of well drilling is ensured.
Disclosure of Invention
In view of the above shortcomings of the prior art, an object of the present invention is to provide a slurry separator and a drilling system for solving the problems of well head sealing and slurry discharge in the prior art.
To achieve the above and other related objects, the present invention provides a pulp separator, including:
the upper end and the lower end of the sleeve are provided with ring plates close to the inner side along the circumferential edge;
the expansion core is made of rubber and comprises an arc-shaped arch ring, the arc-shaped arch ring protrudes towards one side of the center line of the sleeve, a hydraulic channel is formed between the concave side of the arc-shaped arch ring and the inner wall of the sleeve, and two ends of the arc-shaped arch ring are clamped on the inner side of the ring plate respectively;
a hydraulic port is formed in the side wall of the sleeve, the hydraulic port is used for introducing hydraulic fluid into the hydraulic channel and discharging the hydraulic fluid in the hydraulic channel, and the hydraulic fluid in the hydraulic channel can expand and deform the arc-shaped arch ring part;
the lower end of the sleeve is provided with a connecting cylinder, and the side wall of the connecting cylinder is provided with a slurry distributing port.
Optionally, the core still including being located the screens circle at arc arch ring upper and lower both ends, two the screens circle respectively with the arc arch ring is fixed, the screens circle with the inboard screens cooperation of crown plate.
A drilling system, comprising: the slurry separator;
further comprising: the outer wall of the vertical cylinder is used for being matched with the inner wall of a well hole, and the outer diameter of the hollow drill rod is smaller than the inner diameter of the vertical cylinder;
the slurry separator is arranged at the upper end of the vertical cylinder, the connecting cylinder is coaxially and detachably connected with the vertical cylinder, and the hollow drill rod axially penetrates through the arc-shaped arch ring;
and a first pulp outlet pipe is arranged on the pulp separating port.
Optionally, a first throttle valve is arranged on the first slurry outlet pipe.
Optionally, the slurry discharging device further comprises a second slurry discharging pipe, the second slurry discharging pipe is arranged on the vertical cylinder, and the second slurry discharging pipe is communicated with the space between the inner wall of the vertical cylinder and the outer wall of the hollow drill rod.
Optionally, a second throttle valve is arranged on the second slurry outlet pipe.
Optionally, a first pressure sensor is arranged on the hollow drill rod, and a second pressure sensor is arranged on the second slurry outlet pipe.
Optionally, a flowmeter is further arranged on the second slurry outlet pipe.
Optionally, the first and second throttles are hydraulically actuated.
Optionally, the pipe diameter of the second slurry outlet pipe is greater than or equal to the pipe diameter of the first slurry outlet pipe.
As mentioned above, the utility model discloses a thick liquid ware and drilling system divide has following beneficial effect at least:
through the setting of arc arch ring, the arc arch ring is rubber construction, enters into the outside of arc arch ring from the hydraulic pressure mouth when hydraulic liquid, and hydraulic liquid expands the arc arch ring, and the salient side of arc arch ring can press from both sides hollow drill rod tightly to realize the space between a vertical section of thick bamboo and the hollow drill rod sealed, through the setting of branch thick liquid mouth, make mud follow hollow drill rod after getting into, flow from dividing the thick liquid mouth again, realize the circulation.
Drawings
Fig. 1 shows a schematic view of a drilling system according to the present invention.
Description of the element reference numerals
1 sleeve barrel
2 expanding core
11 ring plate
21 arc arch ring
12 hydraulic port
13 connecting cylinder
131 pulp-separating port
22 screens circle
3 hollow drill rod
4 vertical cylinder
5 well bore
1311 first slurry outlet pipe
13111 first throttle valve
41 second slurry outlet pipe
411 second throttle valve
31 first pressure sensor
32 second pressure sensor
412 flow meter
Detailed Description
The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.
Please refer to fig. 1. It should be understood that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any modification of the structure, change of the ratio relation or adjustment of the size should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the function that the present invention can produce and the purpose that the present invention can achieve. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.
The following examples are for illustrative purposes only. The various embodiments may be combined, and are not limited to what is presented in the following single embodiment.
Referring to fig. 1, the present invention provides an embodiment of a slurry separator, including: the expansion joint comprises a sleeve 1 and an expansion core 2, wherein ring plates 11 are arranged at the upper end and the lower end of the sleeve 1 along the circumferential edge close to the inner side; the expansion core 2 is made of rubber, the rubber can deform and expand to realize sealing, the expansion core comprises an arc-shaped arch ring 21, the arc-shaped arch ring 21 protrudes towards one side of the central line of the sleeve 1, a hydraulic channel is formed by the concave side of the arc-shaped arch ring 21 and the inner wall of the sleeve 1, and two ends of the arc-shaped arch ring 21 are respectively clamped on the inner sides of the ring plates 11; a hydraulic port 12 is formed in the side wall of the sleeve 1, the hydraulic port 12 is used for introducing hydraulic fluid into the hydraulic channel and discharging the hydraulic fluid in the hydraulic channel, and the hydraulic fluid in the hydraulic channel can expand and deform the arc-shaped arch ring 21; the lower end of the sleeve 1 is provided with a connecting cylinder 13, and the side wall of the connecting cylinder 13 is provided with a pulp separating port 131. When in use, the connecting cylinder 13 is fixedly connected with the upper end of a vertical cylinder mentioned in the following drilling system, the concrete connection mode can be sealed by a flange, or the connecting cylinder 13 and the upper end of the vertical cylinder are welded, etc., the expansion core 2 is arranged into an arc-shaped arch ring 21 structure, when the hollow drill rod is under the tension of hydraulic liquid, the hollow drill rod expands to circumferentially and uniformly extrude the hollow drill rod mentioned by a drilling system to realize sealing, the slurry distributing port 131 is arranged, so that the slurry can be discharged while the sealing is realized, the slurry distributing port 131 can be used as a main slurry discharging channel or an auxiliary slurry discharging channel, the slurry distributing port can be closed when a gas invasion state does not occur at ordinary times, and when the gas invasion occurs, the pressure adjustment in the vertical cylinder is carried out by opening the discharged mud, and the pressure adjustment range can be increased, so that the safety and reliability of the drilling work are ensured. The hydraulic pressure in and out of the hydraulic port 12 can be pumped out of and back to the hydraulic pressure source from the hydraulic pressure source by the hydraulic pump.
Referring to fig. 1, in an embodiment of the expansion core 2, the expansion core 2 further includes two retaining rings 22 located at upper and lower ends of the arc-shaped arch ring 21, the two retaining rings 22 are respectively fixed to the arc-shaped arch ring 21, and the retaining rings 22 are in retaining fit with the inner side of the ring plate 11. The screens circle 22 can with arc arch ring 21 integrated into one piece, the screens structure at the both ends of arc arch ring 21 can be more reliable in the setting of screens circle 22, the screens circle 22 with the loop bar 11, and the area of contact of sleeve 1 inside wall is great.
Referring to fig. 1, an embodiment of a drilling system includes: the slurry separator described in the above embodiment; further comprising: the outer wall of the vertical cylinder 4 is used for being matched with the inner wall of a well hole 5, and the outer diameter of the hollow drill rod 3 is smaller than the inner diameter of the vertical cylinder 4; the slurry separator is arranged at the upper end of the vertical cylinder 4, the connecting cylinder 13 and the vertical cylinder 4 are coaxially and detachably connected, the detachable connection is realized through a flange structure, the detachable structure can realize repeated use and replacement in failure of the slurry separator, particularly, a core expansion 2 part is in pressing contact with the outer wall of the hollow drill rod 3 and is easier to damage relative to a shell, when the core expansion 2 is damaged, the core expansion 2 can be replaced and then is arranged on the vertical cylinder 4 for use, and the hollow drill rod 3 axially penetrates through the arc-shaped arch ring 21; the slurry dividing port 131 is provided with a first slurry outlet pipe 1311, and optionally, the first slurry outlet pipe 1311 is provided with a first throttle valve 13111. The opening and closing and the opening and closing of the first slurry outlet pipe 1311 are controlled by the first throttle valve 13111, whereby the slurry is controlled to flow in and out, and the pressure in the vertical tube 4 is adjusted.
Referring to fig. 1, another embodiment of a drilling system further includes a second slurry outlet pipe 41, the second slurry outlet pipe 41 is disposed on the vertical cylinder 4, and the second slurry outlet pipe 41 is communicated with a space between an inner wall of the vertical cylinder 4 and an outer wall of the hollow drill rod 3. Through the arrangement of the second slurry outlet pipe 41, the adjustment amount of slurry discharge can be increased, so that the adjustment range of the pressure is enlarged, and the safety of the whole drilling system is improved. Optionally, a second throttle 411 is disposed on the second slurry outlet pipe 41. Through the arrangement of the second throttle valve 411, the opening and closing of the second slurry outlet pipe 41 and the opening and closing size can be controlled, so that the adjustment of different discharge amounts is realized, and the release of different pressure sizes in the vertical cylinder 4 is realized.
Referring to fig. 1, in another embodiment of the drilling system, a first pressure sensor 31 is provided on the hollow drill pipe 3, and a second pressure sensor 32 is provided on the second slurry outlet pipe 41. The pressure of mud when getting into on can monitoring hollow drill rod 3, can also monitor mud from the pressure of second play thick liquid pipe 41, compare it, can realize judging whether take place the gas and invade. Optionally, a flow meter 412 is further disposed on the second slurry outlet pipe 41. The flow meter 412 is a gas-liquid flow meter 412 capable of measuring the flow rate of the slurry in the second slurry outlet pipe 41, and the flow rate of the gas when gas invasion occurs. After the computer collects the pressure data, the mud flow data and the gas flow data, the specific gas invasion position can be calculated, so that the opening of the throttle valve is controlled to be adjusted, the control is more accurate, and the installation performance of a drilling system is higher.
In this embodiment, the first throttle 13111 and the second throttle 411 are hydraulically driven. The hydraulic drive can bear larger pressure and has higher reliability.
In this embodiment, the pipe diameter of the second slurry outlet pipe 41 is greater than or equal to the pipe diameter of the first slurry outlet pipe 1311. The second slurry outlet pipe 41 is used as a main slurry discharge pipe, the first slurry outlet pipe 1311 is used as an auxiliary pipe, when gas invasion does not occur, the first slurry outlet pipe 1311 can be closed, the second slurry outlet pipe 41 is opened, when gas invasion is detected, the opening degree of the second throttle valve 411 on the second slurry outlet pipe 41 can be adjusted to achieve flow adjustment, and when the flow of the second slurry outlet pipe 41 reaches a limit or is close to the limit, slurry is discharged through the first slurry outlet pipe 1311.
To sum up, the utility model discloses a setting of arc arch ring 21, arc arch ring 21 are rubber construction, enter into the outside of arc arch ring 21 from hydraulic pressure mouth 12 when hydraulic liquid, hydraulic liquid expands arc arch ring 21, the protrusion side of arc arch ring 21 can press from both sides hollow drill rod 3 tightly to realize the space seal between a vertical section of thick bamboo 4 and the hollow drill rod 3, through the setting of branch thick liquid mouth 131, make mud follow hollow drill rod 3 after getting into, flow from dividing thick liquid mouth 131 again, realize the circulation. Therefore, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. A pulp separator, comprising:
the upper end and the lower end of the sleeve are provided with ring plates close to the inner side along the circumferential edge;
the expansion core is made of rubber and comprises an arc-shaped arch ring, the arc-shaped arch ring protrudes towards one side of the center line of the sleeve, a hydraulic channel is formed between the concave side of the arc-shaped arch ring and the inner wall of the sleeve, and two ends of the arc-shaped arch ring are clamped on the inner side of the ring plate respectively;
a hydraulic port is formed in the side wall of the sleeve, the hydraulic port is used for introducing hydraulic fluid into the hydraulic channel and discharging the hydraulic fluid in the hydraulic channel, and the hydraulic fluid in the hydraulic channel can expand and deform the arc-shaped arch ring part;
the lower end of the sleeve is provided with a connecting cylinder, and the side wall of the connecting cylinder is provided with a slurry distributing port.
2. The slurry separator according to claim 1, wherein: the expansion core further comprises clamping rings positioned at the upper end and the lower end of the arc-shaped arch ring, the clamping rings are fixed with the arc-shaped arch ring respectively, and the clamping rings are matched with the clamping rings on the inner side of the ring plate.
3. A drilling system, comprising: the slurry separator of claim 1 or 2;
further comprising: the outer wall of the vertical cylinder is used for being matched with the inner wall of a well hole, and the outer diameter of the hollow drill rod is smaller than the inner diameter of the vertical cylinder;
the slurry separator is arranged at the upper end of the vertical cylinder, the connecting cylinder is coaxially and detachably connected with the vertical cylinder, and the hollow drill rod axially penetrates through the arc-shaped arch ring;
and a first pulp outlet pipe is arranged on the pulp separating port.
4. The drilling system of claim 3, wherein: and a first throttle valve is arranged on the first slurry outlet pipe.
5. The drilling system of claim 4, wherein: the second slurry outlet pipe is arranged on the vertical cylinder and communicated with the space between the inner wall of the vertical cylinder and the outer wall of the hollow drill rod.
6. The drilling system of claim 5, wherein: and a second throttle valve is arranged on the second slurry outlet pipe.
7. The drilling system of claim 5, wherein: the hollow drill rod is provided with a first pressure sensor, and the second slurry outlet pipe is provided with a second pressure sensor.
8. The drilling system of claim 7, wherein: and the second slurry outlet pipe is also provided with a flowmeter.
9. The drilling system of claim 6, wherein: the first throttle valve and the second throttle valve are hydraulically driven.
10. The drilling system of claim 6, wherein: the pipe diameter of the second slurry outlet pipe is larger than or equal to that of the first slurry outlet pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921750892.1U CN211008514U (en) | 2019-10-17 | 2019-10-17 | Slurry separator and drilling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921750892.1U CN211008514U (en) | 2019-10-17 | 2019-10-17 | Slurry separator and drilling system |
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| Publication Number | Publication Date |
|---|---|
| CN211008514U true CN211008514U (en) | 2020-07-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921750892.1U Active CN211008514U (en) | 2019-10-17 | 2019-10-17 | Slurry separator and drilling system |
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| Country | Link |
|---|---|
| CN (1) | CN211008514U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113669050A (en) * | 2021-09-02 | 2021-11-19 | 中国石油大学(北京) | Gas invasion detection device and method for marine riser |
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2019
- 2019-10-17 CN CN201921750892.1U patent/CN211008514U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113669050A (en) * | 2021-09-02 | 2021-11-19 | 中国石油大学(北京) | Gas invasion detection device and method for marine riser |
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