CN203499625U - Sealing inserting pipe for separated layer water injection to oil-water well - Google Patents
Sealing inserting pipe for separated layer water injection to oil-water well Download PDFInfo
- Publication number
- CN203499625U CN203499625U CN201320597741.3U CN201320597741U CN203499625U CN 203499625 U CN203499625 U CN 203499625U CN 201320597741 U CN201320597741 U CN 201320597741U CN 203499625 U CN203499625 U CN 203499625U
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- CN
- China
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- packing
- sealing
- inserting pipe
- oil
- distance rings
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- Expired - Fee Related
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Abstract
The utility model discloses a sealing inserting pipe for separated layer water injection to an oil-water well. The sealing inserting pipe comprises an upper connector, a lower connector and a sealing assembly. The upper connector and the lower connector are in threaded connection and are sealed through a seal ring. The sealing assembly comprises a check ring, V-shaped packing and packing distance rings, wherein the check ring, the V-shaped packing and the packing distance rings are sequentially connected in a sleeved mode between the upper connector and the lower connector. The upper portion of the upper connector is provided with a conical step. The lower portion of the lower connector is provided with a guiding slant conical surface and a first step. The sealing assembly comprises at least two pieces of V-shaped packing and at least two packing distance rings, wherein the V-shaped packing and the packing distance rings are arranged in sequence and distributed in a bilateral symmetry mode, and the V-shaped packing and the corresponding packing distance rings are separated through middle distance rings. In the process of placing the sealing inserting pipe downwards in the well, the design of the two steps can guarantee that abrasion of the V-shaped packing is avoided in the process of placing a pipe column downwards; due to the symmetrical design of the sealing assembly, the sealing inserting pipe can be adapted to multiple changes of pressure of a water injection layer.
Description
Technical field
The utility model relates to oilfield oil well water filling sealing tool, especially a kind of seperated layer water injection sealing device.
Background technology
Along with oil field enters the exploitation middle and later periods, stratified injection water technology is more and more in field use.Oil field concentric double pipe zone separate injection technical string, utilizes exactly a set of sealing intubate to inject and is arranged in the packoff nipple in outer tube at present, realizes oil well two water filling layer seal isolation, inner tube water filling lower floor, and two-tube annular injection upper strata, can realize two implanted layer different pressures water fillings.But at present conventional sealing intubate is because hermetically-sealed construction is simple, and positioning step is few, easily produces seal failure and cause water filling to alter the problem of layer.
Utility model content
The technical problems to be solved in the utility model is for overcoming above-mentioned deficiency, and a kind of oil-water well seperated layer water injection sealing intubate simple in structure, easy to use, good sealing effect is provided.
The utility model is taked following technical measures: sealing intubate for a kind of oil-water well seperated layer water injection, comprise top connection, lower contact, seal assembly, and described top connection is threaded with lower contact, and seals by sealing ring; Described seal assembly comprises shelves ring, V-type packing, packing spacer ring, and shelves ring, V-type packing, packing spacer ring are socketed between top connection and lower contact successively; Described top connection top is provided with type conical bench, and described lower contact bottom is provided with guiding scalene cone and first step.
Seal assembly comprises at least 2 V-type packings and packing spacer ring, and V-type packing and packing spacer ring are arranged in order and are symmetrical distribution, middle with in spacer ring separate.
The beneficial effects of the utility model are because of the design of twice step, can guarantee to avoid in tubing string decentralization process the wearing and tearing of V-type packing in the process of going into the well; The symmetric design of seal assembly, can adapt to the multiple variation of water filling stressor layer.Compared with prior art, there is the advantages such as simple in structure, good sealing effect.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in the figure, sealing intubate for a kind of oil-water well seperated layer water injection, comprises top connection 1, lower contact 6, seal assembly, and described top connection 1 is threaded with lower contact 6, and seals by sealing ring 7; Described seal assembly comprises shelves ring 2, V-type packing 3, packing spacer ring 5, and shelves ring 2, V-type packing 3, packing spacer ring 5 are socketed between top connection 1 and lower contact 6 successively; Described top connection 1 top is provided with type conical bench 9, and described lower contact 6 bottoms are provided with guiding scalene cone 10 and first step 8.
In the utility model embodiment, seal assembly comprises 2,10 V-type packings 3 of two shelves rings and 8 packing spacer rings 5,5 V-type packings 3 in left side and 4 packing spacer rings 5 are symmetric with 5 V-type packings 3 and 4 packing spacer rings 5 on right side, middle with in spacer ring 4 separate.
The utility model is arranged on two-tube zone separate injection technical string inner tube end, after pointing out according to first step 8 collisions of lower contact 6 bottoms after going into the well fast, slowly transferring tubing string inserts the utility model in outer tube packoff nipple again, the wearing and tearing of V-type packing have been avoided, until the type conical bench 9 collision packoff nipples of top connection 1.In seal assembly, the symmetric design of V-type packing, has increased sealing effectiveness, can adapt to the multiple variation of water filling stressor layer, has extended the life-span of sealing intubate.
The foregoing is only preferred embodiment of the present utility model, non-in order to limit the scope of the claims of the present utility model, other use the equivalence of patent spirit of the present utility model to change, and all should all belong to the scope of the claims of the present utility model.
Claims (2)
1. a sealing intubate for oil-water well seperated layer water injection, is characterized in that comprising top connection, lower contact, seal assembly, and described top connection is threaded with lower contact, and seals by sealing ring; Described seal assembly comprises shelves ring, V-type packing, packing spacer ring, and shelves ring, V-type packing, packing spacer ring are socketed between top connection and lower contact successively; Described top connection top is provided with type conical bench, and described lower contact bottom is provided with guiding scalene cone and first step.
2. sealing intubate for oil-water well seperated layer water injection according to claim 1, is characterized in that described seal assembly comprises at least 2 V-type packings and packing spacer ring, and V-type packing and packing spacer ring are arranged in order and are symmetrical distribution, middle with in spacer ring separate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320597741.3U CN203499625U (en) | 2013-09-27 | 2013-09-27 | Sealing inserting pipe for separated layer water injection to oil-water well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320597741.3U CN203499625U (en) | 2013-09-27 | 2013-09-27 | Sealing inserting pipe for separated layer water injection to oil-water well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203499625U true CN203499625U (en) | 2014-03-26 |
Family
ID=50330614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320597741.3U Expired - Fee Related CN203499625U (en) | 2013-09-27 | 2013-09-27 | Sealing inserting pipe for separated layer water injection to oil-water well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203499625U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110118264A (en) * | 2019-05-14 | 2019-08-13 | 苏州博雷特流体控制有限公司 | A method of the high-performance expansion sluice valve with back seal function and replacement filler |
-
2013
- 2013-09-27 CN CN201320597741.3U patent/CN203499625U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110118264A (en) * | 2019-05-14 | 2019-08-13 | 苏州博雷特流体控制有限公司 | A method of the high-performance expansion sluice valve with back seal function and replacement filler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140326 Termination date: 20140927 |
|
| EXPY | Termination of patent right or utility model |