CN2600580Y - Temp. control flushing packer - Google Patents
Temp. control flushing packer Download PDFInfo
- Publication number
- CN2600580Y CN2600580Y CN 03201286 CN03201286U CN2600580Y CN 2600580 Y CN2600580 Y CN 2600580Y CN 03201286 CN03201286 CN 03201286 CN 03201286 U CN03201286 U CN 03201286U CN 2600580 Y CN2600580 Y CN 2600580Y
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- CN
- China
- Prior art keywords
- temperature
- sensitive
- packer
- oil pipe
- utility
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- Expired - Fee Related
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Abstract
The utility model discloses a temperature controlled well washing packer, and the working power of the utility model is provided by a temperature sensing chamber. The temperature sensing chamber is an enclosed space formed by the assembling of an external cylinder of the temperature sensing chamber, an internal cylinder of the temperature sensing chamber and a ring type piston, and heat sensitive material is arranged in the space. Two ends of the well washing packer are connected with an oil pipe. The utility model pushes the ring type piston and shifts a sliding sleeve depends on the pressure generated in the ring type piston caused by the expansive force arising from the expansion of the heat sensitive material, opens a valve hole of a central pipe and squeezes a rubber cylinder of the packer to expand the rubber cylinder, and a ring type space of the oil pipe and the sleeve pipe under the valve hole is stopped. Oil washing fluid entry to the oil pipe through the valve hole of the central pipe and back to the ground, and the accumulated wax of the oil pipe can be cleaned in the process of backing to the ground. When the temperature is lower than a memory temperature, the size of the thermal sensitive material is reduced and the sliding sleeve is offsetting, the valve is closed and the rubber cylinder of the packer is back to normal. The utility model has small size and can provide the temperature controlled well washing packer with smaller diameter, and has no affection for the annulus testing, simple production, and the short circuit cleaning effect can fully meet the needs of the oil production.
Description
The utility model relates to the oilfield servicing special tool, specifically is a kind of temperature control flushing packer, is used for hot cleanout and paraffin removal of oil well.
Oilfield wax removal, the most frequently used way are the hydrothermal solutions by uniform temperature, pump into from the well head sleeve pipe, enter oil pipe from tubing shoe again and turn back to well head and carry out hot-washing wax remover.Because oil well paraffinication point is epimere in oil pipe often, the hot washing lotion that above cleaning way has not only been wasted 1/3-2/3, also wasted a large amount of heat energy, hot scouring water enters the stratum and easily the stratum is killed, also can be with the clay swell in the water-sensitive formation, thereby cause reservoir permeability to reduce, influence oil well yield.
Chinese patent 02204489.2 discloses a kind of sleeve type heat sensor, with valve and the supporting use of packing element, is made up of inner core, " o " RunddichtringO, sliding outer cover, and sliding outer cover is enclosed within on the central tube, has valve opening on the central tube; The sliding outer cover inwall has ring-shaped step, and the inner core cylindrical has cannelure, dress heat-sensitive materials in the cannelure.The sleeve type heat sensor has two groups, one group of centre that is installed in tubing coupling and valve, and another is assembled in the middle of tubing coupling and the packer.Problem is two groups of connections, and volume is long, is easy to generate asynchrony phenomenon during work, and the cost height.
The utility model is improved a kind of temperature control flushing packer of design with the sleeve type heat sensor, at down-hole sealing oil, sleeve pipe annular space, returns ground after allowing flushing fluid enter oil pipe, realizes the short circuit hot-washing wax remover.
The utility model be achieved in that the temperature control flushing packer by central tube, the outdoor tube of temperature-sensitive, the indoor tube of temperature-sensitive, annular piston, sliding sleeve, packing element, box cupling, shelves ring, be equipped with cap and " o " type circle is formed.Temperature control flushing packer operation power is provided by the temperature-sensitive chamber, and the temperature-sensitive chamber is the confined space that is formed by the outdoor tube of temperature-sensitive, the indoor tube of temperature-sensitive, annular piston assembling back, dress heat-sensitive materials in the confined space.The outdoor tube of temperature-sensitive, the indoor tube of temperature-sensitive all have cannelure, and its contact surface seals with " o " type circle.The outdoor tube of temperature-sensitive, the indoor tube of temperature-sensitive, annular piston, sliding sleeve, packing element fit together, and temperature control flushing packer two ends are connected with oil pipe.The expansion force that produces after relying on heat-sensitive materials to expand produces pressure on annular piston, promote the annular piston displacement, promote the sliding sleeve displacement during annular piston displacement, valve opening and the compression packer packing element opened on the central tube make the packing element distending, flushing fluid enters pit shaft, enter oil pipe by the valve opening on the central tube, the following oil of while packing element shutoff valve opening, sleeve pipe annular space, flushing fluid enters oil pipe by the valve opening place on the central tube and returns ground, and flushing fluid wax deposition to oil pipe in returning the process on ground is cleaned.When temperature was lower than memory temperature, the heat-sensitive materials volume-diminished leaned on the recuperability of packing element that sliding sleeve is resetted, and valve cuts out, and packing element restores to the original state.Require heat-sensitive materials to have under certain memory temperature and solid-stately change liquid state or liquid gas mixed state into or be transformed into gaseous state from liquid state, and expand in transition process, the memory temperature of heat-sensitive materials is advisable for 45-100 ℃ under normal pressure.
The temperature control flushing packer only need be used one group, two ends connect oil pipe, design scheme after the improvement and former design are relatively, volume shortens 1/2nd, overcome the asynchrony phenomenon that has been easy to generate when working, and former cost of manufacture has been reduced half, can design the less temperature control flushing packer of diameter, promptly do not influence annulus logging, be difficult for causing lock of tool drilling again.Make simply, handling ease, sealing is reliable, and the short circuit cleaning performance can satisfy the oil well production needs fully.
The utility model is described in further detail below in conjunction with the drawings and specific embodiments:
Fig. 1 is a structure sectional view of the present utility model;
1 box cupling among the figure, 2 central tubes, the indoor tube of 3 temperature-sensitives, the outdoor tube of 4 temperature-sensitives, 5 annular pistons, 6 sliding sleeves, 7 packing elements, 8 grades of rings, 9 are equipped with cap, 10 " o " RunddichtringO, 11 valve openings
According to shown in Figure 1, form the temperature-sensitive chamber by the indoor tube 3 of temperature-sensitive, the outdoor tube 4 of temperature-sensitive, indoor tube 3 of temperature-sensitive and the outdoor tube 4 of temperature-sensitive seal with " o " RunddichtringO 10 with the contact surface of annular piston 5, there is valve opening 11 at central tube 2 corresponding sliding sleeves 6 places, the indoor tube 3 of temperature-sensitive, the outdoor tube 4 of temperature-sensitive, annular piston 5, sliding sleeve 6, packing element 7 fit together, packing element 7 one ends connect crotch shelves ring 8, and cap 9 is fixing by being equipped with.Whole temperature control flushing packer only needs one group, is installed in the centre of oil pipe, and two ends are connected with oil pipe.
Claims (1)
1, a kind of temperature control flushing packer, box cupling (1), shelves encircle (8), are equipped with cap (9), valve opening (11) is arranged on the central tube (2), it is characterized in that: the temperature-sensitive chamber is the seal cavity that the temperature-sensitive chamber is formed by inner core (3), the outdoor tube of temperature-sensitive (4), annular piston (5) assembling back, interior dress heat-sensitive materials, the indoor tube of temperature-sensitive (3), the outdoor tube of temperature-sensitive (4) all have cannelure, and its contact surface seals with " o " type circle (10); The indoor tube of temperature-sensitive (3), the outdoor tube of temperature-sensitive (4), annular piston (5), sliding sleeve (6), packing element (7) fit together, and temperature control flushing packer two ends connect oil pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03201286 CN2600580Y (en) | 2003-01-18 | 2003-01-18 | Temp. control flushing packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03201286 CN2600580Y (en) | 2003-01-18 | 2003-01-18 | Temp. control flushing packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2600580Y true CN2600580Y (en) | 2004-01-21 |
Family
ID=34157490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03201286 Expired - Fee Related CN2600580Y (en) | 2003-01-18 | 2003-01-18 | Temp. control flushing packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2600580Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022092A (en) * | 2010-11-20 | 2011-04-20 | 中国石油集团西部钻探工程有限公司 | Open hole packer and tapping tool used together with same |
| CN104818961A (en) * | 2015-05-05 | 2015-08-05 | 阜新晟氟利高分子材料有限公司 | Temperature-control thermal flushing switch for heavy oil thermal production well |
| CN108680314A (en) * | 2018-05-10 | 2018-10-19 | 安徽理工大学 | A kind of sliding sleeve of bushing thermal modeling test device |
| CN111005700A (en) * | 2018-10-08 | 2020-04-14 | 中国石油化工股份有限公司 | Quick-release hydraulic control packer and construction method |
-
2003
- 2003-01-18 CN CN 03201286 patent/CN2600580Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022092A (en) * | 2010-11-20 | 2011-04-20 | 中国石油集团西部钻探工程有限公司 | Open hole packer and tapping tool used together with same |
| CN102022092B (en) * | 2010-11-20 | 2013-07-31 | 中国石油集团西部钻探工程有限公司 | Open hole packer and tapping tool used together with same |
| CN104818961A (en) * | 2015-05-05 | 2015-08-05 | 阜新晟氟利高分子材料有限公司 | Temperature-control thermal flushing switch for heavy oil thermal production well |
| CN104818961B (en) * | 2015-05-05 | 2017-08-18 | 阜新晟氟利高分子材料有限公司 | Thick oil thermal extraction temperature control heating power well washing switch |
| CN108680314A (en) * | 2018-05-10 | 2018-10-19 | 安徽理工大学 | A kind of sliding sleeve of bushing thermal modeling test device |
| CN111005700A (en) * | 2018-10-08 | 2020-04-14 | 中国石油化工股份有限公司 | Quick-release hydraulic control packer and construction method |
| CN111005700B (en) * | 2018-10-08 | 2021-11-30 | 中国石油化工股份有限公司 | Quick-release hydraulic control packer and construction method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |