CN201802393U - Directional automatic opening capillary pressure testing device - Google Patents
Directional automatic opening capillary pressure testing device Download PDFInfo
- Publication number
- CN201802393U CN201802393U CN2010205327445U CN201020532744U CN201802393U CN 201802393 U CN201802393 U CN 201802393U CN 2010205327445 U CN2010205327445 U CN 2010205327445U CN 201020532744 U CN201020532744 U CN 201020532744U CN 201802393 U CN201802393 U CN 201802393U
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- pressure
- capillary
- tube
- opening valve
- pressure transmitting
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Abstract
The utility model relates to a directional automatic opening capillary pressure testing device, which is applied to testing underground pressure at the high temperature in oil fields. The pressure testing device mainly comprises a capillary, a capillary seal joint, a pressure transmitting barrel and a unidirectional opening valve, wherein the pressure transmitting barrel is an airtight cylindrical barrel; the top of the pressure transmitting barrel is fixed with the capillary seal joint; the capillary is connected onto the capillary seal joint; the pressure transmitting barrel is fixed on the inner wall of an oil pipe; the lower end of the pressure transmitting barrel is provided with a pressure transmitting hole; the pressure transmitting hole is communicated with the wall pressure transmitting hole of the oil pipe; and the unidirectional opening valve is fixed in the pressure transmitting barrel and the pressure transmitting hole of the oil pipe. The utility model has the effects that underground particulate matter can be effectively prevented from entering the pressure testing capillary in the underground job execution process to ensure the pressure testing data to be accurate.
Description
Technical field
The utility model relates to the oilfield well testing technical field, and particularly a kind of capillary pressure measuring device is the downhole hardware of capillary pressure measuring under a kind of high temperature well.
Background technology
In the construction of oilfield test down-hole pressure, be widely used in capillary pressure measuring device and carry out pressure measurement.Capillary pressure measuring device has high temperature high voltage resistant, corrosion-resistant, characteristics such as applicability is strong, so in the field pressure test, has especially more embodied its superiority in the pressure test of high temperature well.Capillary tube is the pressure transmission passage in the capillary pressure measuring device of field by using, and the nitrogen in the capillary tube is transmission medium, and there are nitrogen and the extraneous pressure measurement interface that contacts in the down-hole.At present, directly by the capillary tube lower ending opening as the pressure measurement interface, like this in the test technology implementation process, capillary tube is stopped up by particulate matter when capillary pressure measuring device often occurring and going into the well, and causes measuring accuracy to reduce, can't satisfy the requirement of high accuracy manometric technique such as pressure recovery; When capillary tube blocked when serious, can't the testing well downforce.
Chinese patent publication number: CN101514628 provides " a kind of capillary tubing underground pressure real-time measuring and modification method ", and wherein device for pressure measurement is made up of down-hole pressure-transmission tube, capillary tubing, pressure transmitter, temperature transmitter, data acquisition unit.The down-hole pressure-transmission tube is in the down-hole, be connected with the pressure transmitter on ground by capillary tubing, down-hole pressure is delivered to ground by the inert gas in the capillary tubing, be converted into data signal by pressure transmitter, data acquisition unit is gathered the well head pressure signal of pressure transmitter and the ambient temperature signal of temperature transmitter.
The utility model content
The purpose of this utility model is: the capillary pressure measuring device that provides a kind of orientation to open automatically, in the well pressure measuring process, can prevent that medium from entering in the pressure measurement capillary tube, and it is unimpeded to make the pressure measurement capillary tube keep transmitting pressure.The assurance pressure test is accurate.
The technical solution adopted in the utility model is: the directed capillary pressure measuring device of opening automatically, mainly form by capillary tube, capillary seal joint, pressure-transmission tube and unidirectional opening valve, pressure-transmission tube is airtight cylindrical tube, be fixed with the capillary seal joint at the top of pressure-transmission tube, capillary tube is connected on the capillary seal joint.The capillary tube upper end is connected to the ground test instrument and annotates nitrogen equipment, and capillary energy passes to the ground test instrument with down-hole pressure by medium nitrogen, it is characterized in that: pressure-transmission tube is fixed on the inwall of oil pipe; There is pressure transmission hole the pressure-transmission tube lower end, and pressure transmission hole and tubing wall pressure transmission hole UNICOM are fixed with unidirectional opening valve in pressure-transmission tube and oil pipe pressure transmission hole.After unidirectional opening valve came off, the pressure in the oil well can be delivered in the pressure-transmission tube by unidirectional opening valve.Unidirectional opening valve can stop that particulate matter enters in the pressure-transmission tube in the process of going into the well.
Fall in the well when coming off in order to prevent that unidirectional opening valve from opening, on the outer wall of oil pipe, be fixed with the opening valve anti-drop device.The opening valve anti-drop device is to adopt steel plate to make circular arc, and there is the end lower end of opening valve anti-drop device, and opening valve anti-drop device upper end is the opening shape.
The beneficial effects of the utility model: the directed capillary pressure measuring device of opening automatically of the utility model, can prevent effectively that the down-hole particulate matter enters in the pressure measurement capillary tube in the underground work work progress, guarantee that pressure testing data is accurate.
Description of drawings
Fig. 1 is the directed capillary pressure measuring device structural profile schematic diagram of opening automatically of the utility model.
Among the figure, 1. capillary tube, 2. capillary seal joint, 3. pressure-transmission tube, 4. unidirectional opening valve, 5. opening valve anti-drop device, 6. box cupling, 7. oil pipe.
The specific embodiment
Embodiment 1: the capillary pressure measuring device of opening automatically with an orientation is an example, and the utility model is described in further detail.
Consult Fig. 1.The directed capillary pressure measuring device of opening automatically of the utility model mainly is made up of capillary tube 1, capillary seal joint 2, pressure-transmission tube 3, unidirectional opening valve 4 and opening valve anti-drop device 5.Pressure-transmission tube 3 is cylindrical tubes of airtight internal diameter 30mm, wall thickness 5mm, height 80mm.Be fixed with a capillary seal joint 2 at the top of pressure-transmission tube 3, capillary tube 1 is connected on the capillary seal joint 2, is connected to ground pressure measurement instrument always.
Pressure-transmission tube 3 is fixed on the inwall of oil pipe 7; There are two pressure transmission holes pressure-transmission tube 3 lower ends, and pressure transmission hole and oil pipe 7 wall pressure transmission hole UNICOMs are fixed with a unidirectional opening valve 4 respectively in pressure-transmission tube 3 and oil pipe 7 pressure transmission holes.
On the outer wall of oil pipe 7, be fixed with an opening valve anti-drop device 5.Opening valve anti-drop device 5 is to adopt thickness to make circular arc for the 3mm steel plate, and there is the end lower end of opening valve anti-drop device 5, and opening valve anti-drop device 5 upper ends are the opening shape.
The directed capillary pressure measuring device work of opening automatically of summary is former.Consult Fig. 1.Oil pipe 7 plays the effect of protection pressure-transmission tube 3.When underground work need be logged well downforce, the capillary pressure measuring device that orientation is opened automatically was fixed on the inwall of oil pipe 7, connected oil pipe 7 by tubing coupling 6, automatically the capillary pressure measuring device G.I.H predetermined position of opening.Unidirectional opening valve 2 is closed in being lowered to process.In pressure-transmission tube 3, after pressure-transmission tube 3 internal pressures reached certain pressure, unidirectional opening valve 4 was opened automatically by capillary tube 1 nitrogen injection, and valve body falls into directional valve and opens anti-drop device 5, and at this moment pressure-transmission tube 3 is communicated with well is interior.The pressure of pressure-transmission tube being accepted by capillary tube is delivered to the ground acquisition system.
Claims (2)
1. the capillary pressure measuring device opened automatically of an orientation, mainly form by capillary tube (1), capillary seal joint (2), pressure-transmission tube (3) and unidirectional opening valve (4), pressure-transmission tube (3) is airtight cylindrical tube, be fixed with capillary seal joint (2) at the top of pressure-transmission tube (3), capillary tube (1) is connected on the capillary seal joint (2); It is characterized in that: pressure-transmission tube (3) is fixed on the inwall of oil pipe (7); There is pressure transmission hole pressure-transmission tube (3) lower end, and pressure transmission hole and oil pipe (7) wall pressure transmission hole UNICOM is fixed with unidirectional opening valve (4) in pressure-transmission tube (3) and oil pipe (7) pressure transmission hole.
2. the capillary pressure measuring device that orientation according to claim 1 is opened automatically, it is characterized in that: on the outer wall of oil pipe (7), be fixed with opening valve anti-drop device (5), opening valve anti-drop device (5) is to adopt steel plate to make circular arc, there is the end lower end of opening valve anti-drop device (5), and opening valve anti-drop device (5) upper end is the opening shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205327445U CN201802393U (en) | 2010-09-15 | 2010-09-15 | Directional automatic opening capillary pressure testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205327445U CN201802393U (en) | 2010-09-15 | 2010-09-15 | Directional automatic opening capillary pressure testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201802393U true CN201802393U (en) | 2011-04-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205327445U Expired - Lifetime CN201802393U (en) | 2010-09-15 | 2010-09-15 | Directional automatic opening capillary pressure testing device |
Country Status (1)
| Country | Link |
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| CN (1) | CN201802393U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102182452A (en) * | 2011-04-28 | 2011-09-14 | 北京昊科航科技有限责任公司 | Capillary-type pressure measuring device |
| CN102383782A (en) * | 2011-11-15 | 2012-03-21 | 中国石油天然气股份有限公司 | Small-diameter high temperature heat-insulating pressure measuring unit |
| CN103643944A (en) * | 2013-11-20 | 2014-03-19 | 中国科学院力学研究所 | Pressure transferring device for testing coal seam capillary tube |
| CN103742128A (en) * | 2013-12-18 | 2014-04-23 | 中国科学院力学研究所 | System for testing pressure of capillary tube of coal bed gas |
| CN112554870A (en) * | 2020-12-04 | 2021-03-26 | 中国石油天然气股份有限公司 | Capillary steel pipe pressure measurement interval pumping control device and method |
-
2010
- 2010-09-15 CN CN2010205327445U patent/CN201802393U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102182452A (en) * | 2011-04-28 | 2011-09-14 | 北京昊科航科技有限责任公司 | Capillary-type pressure measuring device |
| CN102182452B (en) * | 2011-04-28 | 2014-09-10 | 北京昊科航科技有限责任公司 | Capillary-type pressure measuring device |
| CN102383782A (en) * | 2011-11-15 | 2012-03-21 | 中国石油天然气股份有限公司 | Small-diameter high temperature heat-insulating pressure measuring unit |
| CN102383782B (en) * | 2011-11-15 | 2014-11-26 | 中国石油天然气股份有限公司 | Small-diameter high temperature heat-insulating pressure measuring unit |
| CN103643944A (en) * | 2013-11-20 | 2014-03-19 | 中国科学院力学研究所 | Pressure transferring device for testing coal seam capillary tube |
| CN103643944B (en) * | 2013-11-20 | 2016-08-10 | 中国科学院力学研究所 | A kind of coal seam capillary tube test pressure transfering appts |
| CN103742128A (en) * | 2013-12-18 | 2014-04-23 | 中国科学院力学研究所 | System for testing pressure of capillary tube of coal bed gas |
| CN112554870A (en) * | 2020-12-04 | 2021-03-26 | 中国石油天然气股份有限公司 | Capillary steel pipe pressure measurement interval pumping control device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110420 |