CN212406630U - Drill rod filter - Google Patents
Drill rod filter Download PDFInfo
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- CN212406630U CN212406630U CN202022138686.4U CN202022138686U CN212406630U CN 212406630 U CN212406630 U CN 212406630U CN 202022138686 U CN202022138686 U CN 202022138686U CN 212406630 U CN212406630 U CN 212406630U
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Abstract
The utility model discloses a drill rod filter, including barrel (2), its characterized in that: a partition part (3) is arranged in the cylinder body (2); the partition piece (3) is used for dividing the inner space (3) of the cylinder body (2) into at least two axial through cavities; the top end of the cylinder (2) is connected with the first filtering cover plate, and the bottom end of the cylinder is connected with the second filtering cover plate; the first filtering cover plate and the second filtering cover plate are divided into a filtering part and a through part corresponding to the axial through cavity; the filter part and the through part of the first filter cover plate correspond to the through part and the filter part of the second filter cover plate respectively; the filtering part is used for filtering the drilling fluid; the problem of current drilling rod filter cause erosion drilling rod inner wall when filtering drilling fluid is solved.
Description
Technical Field
The utility model relates to a filtration equipment, it is the drilling rod filter who uses in the well head drilling rod specifically.
Background
At present, measurement while drilling instruments LWD, MWD, rotary steering tools, downhole precision tools and the like are frequently used in the drilling process, the drilling fluid has high solid content requirement on the drilling fluid, and the drilling fluid contains larger particles or other larger solid impurities, so that a drill rod filter is required to be used in an wellhead drill rod.
The main body of the conventional drill rod filter is a cylinder, a plurality of filter holes are formed in the wall of the cylinder, and drilling fluid enters a shaft after passing through the drill rod filter and then is filtered through the filter holes in the outer wall. And the drill rod filter of this kind of structure can produce long-time erosion to the drilling rod inner wall, leads to the drilling rod life-span to reduce, and in serious cases can lead to the drilling rod to puncture, takes place the fracture accident.
Disclosure of Invention
In view of this, the utility model provides a drill rod filter solves current drill rod filter and causes the problem of erosion drilling rod inner wall when filtering drilling fluid.
For realizing the above utility model purpose, a drilling rod filter, including the barrel, its characterized in that:
a partition part is arranged in the cylinder body;
the partition piece is used for partitioning the inside of the cylinder into at least two axial through cavities;
the top end of the cylinder is connected with the first filtering cover plate, and the bottom end of the cylinder is connected with the second filtering cover plate;
the first filtering cover plate and the second filtering cover plate are divided into a filtering part and a through part corresponding to the axial through cavity;
the filter part and the through part of the first filter cover plate correspond to the through part and the filter part of the second filter cover plate respectively;
the filtering part is used for filtering the drilling fluid.
Furthermore, a filtering hole is formed in the partition piece;
and the filter holes are used for communicating two adjacent axial through cavities and filtering the drilling fluid which flows between the two axial through cavities.
Further, the cavity body structures of all the axial through cavities are the same.
Further, the number of the axial through cavities is even.
Further, the partition is in a crisscross structure.
Furthermore, filter holes are uniformly distributed on the partition piece;
the filtering holes are transverse strip-shaped holes.
Further, a hand piece is connected to the first filtering cover plate;
the hand-held piece is used for placing the cylinder body on the last drill rod joint of the wellhead.
Furthermore, an inter-platform structure is arranged on the lower end face of the first filtering cover plate;
the inter-platform structure is used for clamping the cylinder body on an inner shoulder of the drill rod joint so as to fix the cylinder body.
The utility model discloses following beneficial effect has:
the utility model discloses the drilling rod filter, the barrel surface does not set up the filtration pore of crossing of filtering drilling fluid, but pass through the chamber for two at least axial with the inside interval of barrel, and set up first filtration apron and second filtration apron respectively at the barrel both ends, and first filtration apron and second filtration apron correspond the axial and link up the chamber and divide into the filter house and link up the portion, the filter house and the portion of linking up that the first filtration apron corresponds the second filtration apron respectively link up the portion and the filter house, so structural design, can ensure the overflow area of filter, under the prerequisite of the overflow area of guaranteeing the filter, realize opening the pump after, the drilling fluid directly gets into the lower part pit shaft downwards after filtering through the drilling rod filter, and not erode the drilling rod inner wall, solve current drilling rod filter and cause the problem of erodeing the drilling rod inner wall when filtering the drilling fluid.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:
FIG. 1 is a front view of a drill pipe filter according to an embodiment of the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a view F-F of FIG. 1;
FIG. 4 is a view G-G of FIG. 3;
FIG. 5 is a schematic top view of a drill pipe filter according to an embodiment of the present invention;
fig. 6 is a schematic bottom structure view of the drill rod filter according to the embodiment of the present invention.
Detailed Description
The present invention will be described below based on examples, but it should be noted that the present invention is not limited to these examples. In the following detailed description of the present invention, certain specific details are set forth in detail. However, for parts not described in detail, those skilled in the art can fully understand the present invention.
Furthermore, those skilled in the art will appreciate that the drawings are provided for purposes of illustrating the objects, features, and advantages of the invention and are not necessarily drawn to scale.
Also, unless the context clearly requires otherwise, throughout the description and the claims, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is, the meaning of "includes but is not limited to".
FIG. 1 is a front view of a drill pipe filter according to an embodiment of the present invention; FIG. 2 is a top view of FIG. 1; FIG. 3 is a view F-F of FIG. 1; FIG. 4 is a view G-G of FIG. 3; in fig. 1-4, the drill rod filter of the present embodiment includes a cylinder 2, a partition 3 is disposed inside the cylinder 2, and the partition 3 partitions the inside of the cylinder 2 into at least two axial through cavities; the top end of the cylinder 2 is connected with a first filtering cover plate, the bottom end of the cylinder is connected with a second filtering cover plate, the first filtering cover plate and the second filtering cover plate are divided into a filtering part and a through part corresponding to the axial through cavity, and the filtering part and the through part of the first filtering cover plate respectively correspond to the through part and the filtering part of the second filtering cover plate; the filter part is used for filtering the drilling fluid.
The drill rod filter of this embodiment, the barrel surface does not set up the filtration pore of filtering drilling fluid, but with the inside interval of barrel for two at least axial through cavities, and set up first filter cover plate and second filter cover plate respectively at the barrel both ends, and first filter cover plate and second filter cover plate correspond the axial and link up the cavity and divide into filter house and the portion of linking up, the filter house and the portion of linking up of first filter cover plate correspond the portion of linking up and the filter house of second filter cover plate respectively, so structural design, can ensure the area of overflowing of filter, under the prerequisite of the area of overflowing of guaranteeing the filter, realize after the pump is driven, drilling fluid directly gets into lower part pit shaft downwards after filtering through the drill rod filter, and do not erode the drill rod inner wall, solve current drill rod filter and cause the problem of erodeing the drill rod inner wall when filtering drilling fluid.
The partition piece 3 is provided with a filter hole 4, and the filter hole 4 is used for communicating two adjacent axial through cavities and filtering the drilling fluid which flows between the two through cavities. In fig. 4, the partition plates are uniformly provided with filter holes 4, and the filter holes 4 are transverse strip-shaped holes.
The filter holes 4 are formed in the partition part 3 and play a role in communicating two adjacent axial through cavities, so that the phenomenon that the flow rate of one axial through cavity is too large can be avoided, the drilling fluid flowing into the cylinder body 2 is uniformly distributed into the two axial through cavities, and the purpose of stable filtering is achieved; meanwhile, the drilling fluid flowing between the two is filtered, so that the filtering frequency is increased, and the purpose of improving the filtering effect is achieved.
In fig. 3, the partition 3 comprises four partitions connected in a crisscross configuration so as to divide the interior of the cylinder 2 into four axial through cavities. Of course, the partition 3 may be a partition plate, which divides the interior of the cylinder 2 into two axial through cavities. Or 6 partition plates which divide the interior of the cylinder body 2 into six axial through cavities at intervals. However, through field tests, the cross-shaped partition 3 has the best filtering effect and filtering efficiency on the premise of ensuring the flow area.
FIG. 5 is a schematic top view of a drill pipe filter according to an embodiment of the present invention; fig. 6 is a schematic bottom structure view of the drill rod filter according to the embodiment of the present invention. In fig. 5 and 6, the top end of the cylinder 2 is fixedly connected with a first filter cover plate, the bottom end is fixedly connected with a second filter cover plate, the first filter cover plate is divided into four sectors, and the four sectors are divided into a first filter part 10 and a first through part 20 by separating; the second filter cover plate is also divided into four sectors, which are divided into the second filter unit 30 and the second through-hole unit 40 with the second filter unit interposed therebetween.
The first filter portion 10 of the first filter cover plate corresponds to the second through hole 40 of the second filter cover plate, and the first through hole 20 of the first filter cover plate corresponds to the second filter portion 30 of the second filter cover plate.
During construction, a first part of drilling fluid enters an axial through cavity between the first filtering part 10 and the second through part 40 after being filtered by the first filtering part 10 of the first filtering cover plate, and directly enters a lower shaft; the second part of the drilling fluid directly enters the axial through cavity between the first through part 20 and the second filtering part 30 of the second filtering cover plate through the first through part 20 of the first filtering cover plate, wherein one part of the drilling fluid enters the lower shaft after being filtered by the second filtering part 30 of the second filtering cover plate, and the other part of the drilling fluid enters the axial through cavity between the first through part 20 and the second filtering part 30 of the second filtering cover plate after being filtered by the filtering holes 4 on the partition member 3 and then enters the lower shaft along with the axial through cavity.
In fig. 5, a hand piece 1 is connected to the first filter cover plate, and the hand piece 1 is used for placing the cylinder body 2 into the last drill pipe joint of the wellhead. The handpiece 1 may be a screw, screwed in the centre of the first filter cover plate. When a single drill rod is connected in the drilling process, the drill rod filter is placed into the joint of the last drill rod of the wellhead by holding the screw.
In fig. 6, the lower end surface of the first filter cover plate is provided with an inter-platform structure 5, and the inter-platform structure 5 is used for clamping the cylinder body 2 on the inner shoulder of the drill rod joint so as to fix the cylinder body 2.
Specifically, the utility model discloses a drilling rod filter's working process is described in combination with the drawing to further illustrate the beneficial effect of the utility model:
during installation, the hand screw (hand piece 1) clamps the interbay structure 5 of the lower end face of the first filter cover plate at the inner shoulder of the last drill rod joint, so that the cylinder body 2 is connected to the joint of the last drill rod of the wellhead.
After the pump is started, a first part of drilling fluid in the drilling fluid enters an axial through cavity between a first filtering part 10 and a second through part 40 after being filtered by the first filtering part 10 of a first filtering cover plate, and directly enters a lower shaft; the second part directly enters the axial through cavity between the first through part 20 and the second filtering part 30 of the second filtering cover plate through the first through part 20 of the first filtering cover plate, wherein one part enters the lower shaft after being filtered by the second filtering part 30 of the second filtering cover plate, and the other part enters the axial through cavity between the first through part 20 and the second filtering part 30 of the second filtering cover plate after being filtered by the filtering holes 4 on the partition member 3 and enters the lower shaft along with the axial through cavity.
Because the first part of drilling fluid and the second part of drilling fluid all get into lower part pit shaft downwards after passing through the drilling rod filter of this embodiment, do not have the poroid structure on the barrel outer wall, so, drilling fluid does not erode the drilling rod inner wall, reaches the purpose that improves the drilling rod life-span.
The above-mentioned embodiments are merely embodiments for expressing the invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several changes, substitutions, modifications, etc. can be made without departing from the spirit of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A drill rod filter comprises a cylinder body (2), and is characterized in that:
a partition part (3) is arranged in the cylinder body (2);
the partition piece (3) is used for partitioning the interior of the barrel (2) into at least two axial through cavities;
the top end of the cylinder (2) is connected with the first filtering cover plate, and the bottom end of the cylinder is connected with the second filtering cover plate;
the first filtering cover plate and the second filtering cover plate are divided into a filtering part and a through part corresponding to the axial through cavity;
the filter part and the through part of the first filter cover plate correspond to the through part and the filter part of the second filter cover plate respectively;
the filtering part is used for filtering the drilling fluid.
2. The drill rod strainer of claim 1 wherein:
the partition piece (3) is provided with a filtering hole (4);
and the filter holes (4) are used for communicating two adjacent axial through cavities and filtering the drilling fluid which flows between the two axial through cavities.
3. The drill rod strainer of claim 1 or 2 wherein:
and the cavity structures of all the axial through cavities are the same.
4. The drill rod strainer of claim 3 wherein:
the number of the axial through cavities is even.
5. The drill rod strainer of claim 4 wherein:
the partition (3) is of a crisscross structure.
6. The drill rod strainer of claim 2 wherein:
filter holes (4) are uniformly distributed on the partition piece (3);
the filtering holes (4) are transverse strip-shaped holes.
7. The drill rod strainer of claim 3 wherein:
the first filtering cover plate is connected with a hand piece (1);
the hand piece (1) is used for placing the cylinder body (2) on a drill pipe joint at the last part of a wellhead.
8. The drill rod strainer of any one of claims 1, 2, 4-6 wherein:
the first filtering cover plate is connected with a hand piece (1);
the hand piece (1) is used for placing the cylinder body (2) on a drill pipe joint at the last part of a wellhead.
9. The drill rod strainer of claim 7 wherein:
an inter-platform structure (5) is arranged on the lower end face of the first filtering cover plate;
the inter-platform structure (5) is used for clamping the cylinder body (2) on an inner shoulder of the drill rod joint so as to fix the cylinder body (2).
10. The drill rod strainer of claim 8 wherein:
an inter-platform structure (5) is arranged on the lower end face of the first filtering cover plate;
the inter-platform structure (5) is used for clamping the cylinder body (2) on an inner shoulder of the drill rod joint so as to fix the cylinder body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022138686.4U CN212406630U (en) | 2020-09-26 | 2020-09-26 | Drill rod filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022138686.4U CN212406630U (en) | 2020-09-26 | 2020-09-26 | Drill rod filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212406630U true CN212406630U (en) | 2021-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022138686.4U Active CN212406630U (en) | 2020-09-26 | 2020-09-26 | Drill rod filter |
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| CN (1) | CN212406630U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112081545A (en) * | 2020-09-26 | 2020-12-15 | 中国石油天然气集团有限公司 | Drill rod filter |
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2020
- 2020-09-26 CN CN202022138686.4U patent/CN212406630U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112081545A (en) * | 2020-09-26 | 2020-12-15 | 中国石油天然气集团有限公司 | Drill rod filter |
| CN112081545B (en) * | 2020-09-26 | 2024-06-21 | 中国石油天然气集团有限公司 | Drill rod filter |
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