CN102383782B - Small-diameter high temperature heat-insulating pressure measuring unit - Google Patents
Small-diameter high temperature heat-insulating pressure measuring unit Download PDFInfo
- Publication number
- CN102383782B CN102383782B CN201110362196.5A CN201110362196A CN102383782B CN 102383782 B CN102383782 B CN 102383782B CN 201110362196 A CN201110362196 A CN 201110362196A CN 102383782 B CN102383782 B CN 102383782B
- Authority
- CN
- China
- Prior art keywords
- pressure
- diameter
- drueckelement
- temperature heat
- small
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The invention discloses a small-diameter high temperature heat-insulating pressure measuring unit, which comprises a pressure measuring body and a pressure measuring capillary, wherein the pressure measuring body is provided with a testing pipeline channel penetrating axially; the side wall of the pressure measuring body is provided with a pressure measuring hole; one end of the pressure measuring body is provided with a pressure transfer channel along the axial direction; the pressure measuring hole is communicated with the pressure transfer channel; one end of the pressure measuring capillary is connected with the pressure measuring body; the pressure measuring capillary has a pressure measuring channel communicated with the pressure transfer channel; and the diameter of the pressure measuring channel is smaller than that of the pressure transfer channel. The small-diameter high temperature heat-insulating pressure measuring unit can accurately measure a pressure value under a viscous oil horizontal well, and the pressure measuring accuracy is high.
Description
Technical field
The present invention is relevant for a kind of pressure measuring unit, especially relevant for a kind of for testing the small-diameter high-temperature heat-insulation pressure measuring unit of the down-hole pressure of thick oil horizontal well.
Background technology
At present, SAGD steam driving exploitation technology has become a kind of fashionable technology of the super viscous crude of international development, and it is mainly by underground continuous steam injection heating oil reservoir, crude oil is driven to around in producing well to then extraction.
In oil extraction in oil field field, horizontal well gravity drives and recovers the oil is more effective thickened oil recovery technique, and SAGD point temperature pressure Dynamic Monitoring is the effective monitoring means that guarantees the normal operation of this technique.This technology mainly utilizes capillary tube pressure transmission principle to realize pressure test, existing for testing the dynamic pressure monitoring device of thick oil horizontal well, mainly comprise a pressure measurement short, in pressure measurement short, axially offer measuring pressure passage, on the sidewall of pressure measurement short, offer the pressure tap being connected with measuring pressure passage, one end of pressure measurement short is connected with well head pressure harvester by a capillary.When test pressure, this pressure measurement short need be lowered to the pressure measurement position of setting under Horizontal Well, down-hole pressure is transferred to the transmission medium in the open conduit that measuring pressure passage forms together with capillary tube by the pressure tap on pressure measurement short, by this transmission medium, down-hole pressure is transferred to well head pressure harvester, thereby realizes the test of Horizontal Well downforce.
But existing dynamic pressure monitoring device, because the lateral wall place at pressure measurement short is without any in order to cover the protective device of pressure tap, therefore, this dynamic pressure monitoring device, after going into the well, often there will be the problem that measuring pressure passage, capillary tube stop up to occur, and causing cannot test pressure; In addition, because the down-hole pressure of horizontal well is unstable, and measuring pressure passage, internal diameter capillaceous are very little, the unexpected increase of down-hole pressure or reduce to cause the pressure transmission in capillary tube unstable, affect the measuring accuracy of pressure, it cannot meet the requirement of the high accuracy manometric techniques such as pressure recovery; Have again, on this dynamic pressure monitoring device, do not arrange and coiled tubing welded structure, be therefore difficult to realize and being connected of coiled tubing, and in welding process, how to protect that through the cable in pressure measurement short, not to be subject to high-temperature damage be also a difficulties.
Therefore, be necessary to provide a kind of new for testing the pressure measuring unit of thick oil horizontal well down-hole pressure, overcome above-mentioned defect.
Summary of the invention
The object of this invention is to provide a kind of small-diameter high-temperature heat-insulation pressure measuring unit, it can accurately test the down-hole pressure value of thick oil horizontal well, and pressure test precision is high.
Above-mentioned purpose of the present invention can adopt following technical proposal to realize:
The invention provides a kind of small-diameter high-temperature heat-insulation pressure measuring unit, described small-diameter high-temperature heat-insulation pressure measuring unit comprises:
Drueckelement, offers the test line passage of axial perforation on it, on the sidewall of described drueckelement, offer pressure tap, in one end of described drueckelement, offers pressure transmission passage in axial direction, and described pressure tap is connected with described pressure transmission passage;
Pressure measurement capillary tube, its one end is connected with described drueckelement, and described pressure measurement capillary tube has measuring pressure passage, and described measuring pressure passage is connected with described pressure transmission passage, and the diameter of described measuring pressure passage is less than the diameter of described pressure transmission passage.
In a preferred embodiment, the diameter of described pressure transmission passage is more than the twice of described measuring pressure passage diameter.
In a preferred embodiment, on the lateral wall of described drueckelement, be connected with diaphragm, described protection membrane cover is located on described pressure tap.
In a preferred embodiment, the pad of described diaphragm for being made by stainless steel material.
In a preferred embodiment, described diaphragm is welded on the lateral wall place that described drueckelement is provided with described pressure tap.
In a preferred embodiment, the described pressure measurement other end capillaceous is connected with capillary tube connector.
In a preferred embodiment, the two ends of described drueckelement convex with respectively connecting portion, and the diameter of described connecting portion is less than the diameter of described drueckelement, and described pressure measurement one end capillaceous is connected on described connecting portion.
In a preferred embodiment, the diameter of described drueckelement equals the diameter of coiled tubing.
In a preferred embodiment, described drueckelement is made by 1Cr18NiTi stainless steel material.
In a preferred embodiment, in described pressure transmission passage, described measuring pressure passage, be filled with transmission medium, described transmission medium is nitrogen.
Feature and the advantage of small-diameter high-temperature heat-insulation pressure measuring unit of the present invention are:
One, small-diameter high-temperature heat-insulation pressure measuring unit of the present invention, the pressure tap being opened on drueckelement sidewall forms an open conduit together with coupled logical pressure transmission passage, pressure measurement measuring pressure passage capillaceous, in this open conduit, be filled with transmission medium, the down-hole pressure of thick oil horizontal well reaches the pressure acquisition device of well head by this transmission medium, in order to realize pressure test.Wherein, the diameter of the pressure transmission passage of drueckelement is designed to be greater than the diameter of pressure measurement measuring pressure passage capillaceous, can guarantee under the intensity of this small-diameter high-temperature heat-insulation pressure measuring unit and the certain condition of length, the pressure transmission volume of corresponding expansion down-hole pressure, increase pressure measurement stability, improve pressure test precision.
Two, small-diameter high-temperature heat-insulation pressure measuring unit of the present invention is connected with diaphragm on the lateral wall of drueckelement, and this diaphragm, for capping pressure tap, to prevent that down-hole medium from entering in measuring pressure passage, causes the problem that pressure measurement capillary tube stops up to occur.
Three, small-diameter high-temperature heat-insulation pressure measuring unit of the present invention, from drueckelement two end axles, to the connecting portion extending, for being welded and fixed with coiled tubing, meanwhile, it is identical with the diameter of coiled tubing that the diameter of drueckelement keeps, and realized the requirement of down-hole string minor diameter.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is that the master of small-diameter high-temperature heat-insulation pressure measuring unit of the present invention looks sectional view.
Fig. 2 is the side view cutaway drawing of small-diameter high-temperature heat-insulation pressure measuring unit of the present invention.
The specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figure 1, 2, the invention provides a kind of small-diameter high-temperature heat-insulation pressure measuring unit, it comprises drueckelement 1 and pressure measurement capillary tube 2.Wherein: the test line passage 11 that offers axial perforation on drueckelement 1, on the sidewall of described drueckelement 1, offer pressure tap 12, one end at described drueckelement offers pressure transmission passage 13 in axial direction, described pressure tap 12 is connected with described pressure transmission passage 13; One end of pressure measurement capillary tube 2 is connected with described drueckelement 1, and described pressure measurement capillary tube 2 has measuring pressure passage 21, and described measuring pressure passage 21 is connected with described pressure transmission passage 13, and the diameter of described measuring pressure passage 21 is less than the diameter of described pressure transmission passage 13.
Specifically, drueckelement 1 is cylinder barrel shaped substantially, and being opened in the test line passage 11 on drueckelement 1 of axially connecting can wear various test cables; Pressure transmission passage 13 is axially inwardly offered from one end of drueckelement 1, and its end is connected with the pressure tap 12 being opened on drueckelement 1 sidewall, and this pressure transmission passage 13 parallels with test line passage 11.
Pressure measurement capillary tube 2 is cylinder barrel shaped substantially, and it is weldingly fixed on one end that drueckelement 1 offers pressure transmission passage 13, and its measuring pressure passage 21 is connected with the pressure transmission passage 13 of drueckelement 1, and the other end of pressure measurement capillary tube 2 is in order to connecting well mouth pressure harvester.
Small-diameter high-temperature heat-insulation pressure measuring unit of the present invention, be opened in together with the measuring pressure passage 21 of pressure tap 12 on drueckelement 1 sidewall and coupled logical pressure transmission passage 13, pressure measurement capillary tube 2 and form an open conduit, in this open conduit, be filled with transmission medium, in the present invention, this transmission medium is nitrogen.When this small-diameter high-temperature heat-insulation pressure measuring unit being placed on to the pressure position of setting thick oil horizontal well down-hole, the down-hole pressure of thick oil horizontal well can reach by the transmission medium in this open conduit the pressure acquisition device of well head, has realized the test to down-hole pressure value; In addition, the diameter of the pressure transmission passage 13 of drueckelement 1 is designed to be greater than the diameter of the measuring pressure passage 21 of pressure measurement capillary tube 2, the benefit of design is like this, guaranteeing under the condition that this small-diameter high-temperature heat-insulation pressure measuring unit intensity and length are certain, correspondingly expanded the pressure transmission volume that down-hole pressure transmits, increase pressure measurement stability, improved pressure test precision.In embodiments of the present invention, the diameter of described pressure transmission passage 13 is that more than the twice of measuring pressure passage 21 diameters of described pressure measurement capillary tube 2, so that its pressure transmission is more stable, pressure test precision is higher.
According to an embodiment of the invention, on the lateral wall of described drueckelement 1, be connected with diaphragm 3, described diaphragm 3 lids are located on described pressure tap 12.In the present invention, the pad of described diaphragm 3 for being made by stainless steel material, it is welded on the lateral wall place that described drueckelement 1 is provided with described pressure tap 12.Diaphragm 3 of the present invention is for capping pressure tap 12; to avoid small-diameter high-temperature heat-insulation pressure measuring unit of the present invention; in process in being lowered to thick oil horizontal well; down-hole medium enters in the measuring pressure passage 21 of pressure measurement capillary tube 2 by the pressure tap 12 of drueckelement 1, and the problem that causes pressure measurement capillary tube 2 to stop up occurs.Under small-diameter high-temperature heat-insulation pressure measuring unit lower going-into-well of the present invention behind precalculated position; by to the interior injection high pressure nitrogen of pressure measurement capillary tube 2, when the inside and outside pressure reduction P >=1.2MPa of diaphragm 3, diaphragm 3 Automatic-fallings; now down-hole medium and pressure measuring unit automatic switching on, realize pressure test.
According to an embodiment of the invention, the other end of described pressure measurement capillary tube 2 is connected with capillary tube connector 4, this capillary tube connector 4 is for being connected fast with the capillary tube being lowered to from well head, to small-diameter high-temperature heat-insulation pressure measuring unit of the present invention is connected with well head pressure harvester.
According to an embodiment of the invention, the two ends of described drueckelement 1 convex with respectively connecting portion 14, and the diameter of described connecting portion 14 is less than the diameter of described drueckelement 1, and one end of described pressure measurement capillary tube 2 is connected on described connecting portion 14.Specifically, the diameter of connecting portion 14 periphery walls is less than the diameter of the periphery wall of drueckelement 1, self-assembling formation one ledge structure between connecting portion 14 and drueckelement 1 like this, by this ledge structure, insert in coiled tubing, and adopt the connected mode of welding connecting portion 14 to be fixedly connected on the inside wall of coiled tubing, realize being connected of small-diameter high-temperature heat-insulation pressure measuring unit of the present invention and connected pipes, and can guarantee the steadiness that connects.In the present invention, the connecting portion 14 at drueckelement 1 two ends is all shaped in drueckelement 1, and pressure transmission passage 13 extends in connecting portion 14, and the measuring pressure passage 21 of the pressure measurement capillary tube 2 being connected with connecting portion 14 communicates.In addition, because the test line passage 11 of drueckelement 1 of the present invention also leaves certain gap after penetrating various test line, therefore make drueckelement 1 of the present invention in the process with coiled tubing welding, can be to the heat insulation nitrogen of the interior injection of test line passage 11, make the interior temperature of drueckelement 1 be no more than 350 ℃, effectively guaranteed the heat insulation and heat radiation in drueckelement 1 and coiled tubing welding process, guaranteed that various test cables are not damaged by high temperature.
Further, in the present invention, the diameter of described drueckelement 1 equals the diameter of coiled tubing, after drueckelement 1 and coiled tubing are welded and fixed, the periphery wall diameter of drueckelement 1 is just suitable with the periphery wall diameter of coiled tubing, to guarantee the minor diameter requirement of down-hole string.In addition, according to well pressure measuring requirement, can on coiled tubing, a plurality of small-diameter high-temperature heat-insulation pressure measuring units of the present invention be set interval, the capillary tube that the pressure measurement capillary tube 2 of each small-diameter high-temperature heat-insulation pressure measuring unit can be lowered to well head through the test line passage 11 of the drueckelement 1 of coiled tubing and each small-diameter high-temperature heat-insulation pressure measuring unit is connected.
According to an embodiment of the invention, described drueckelement 1 is made by 1Cr18NiTi stainless steel material, the material of the coiled tubing of applying in itself and prior art approaches, and therefore can guarantee that intensity, the toughness after drueckelement 1 and coiled tubing welding can be close with the technical indicator of coiled tubing.
The foregoing is only several embodiments of the present invention, those skilled in the art can carry out various changes or modification and not depart from the spirit and scope of the present invention the embodiment of the present invention according to the disclosed content of application documents.
Claims (10)
1. a small-diameter high-temperature heat-insulation pressure measuring unit, is characterized in that, described small-diameter high-temperature heat-insulation pressure measuring unit comprises:
Drueckelement, offers the test line passage of axial perforation on this drueckelement, on the sidewall of described drueckelement, offer pressure tap, in one end of described drueckelement, offers pressure transmission passage in axial direction, and described pressure tap is connected with described pressure transmission passage;
Pressure measurement capillary tube, this pressure measurement capillary tube one end is connected with described drueckelement, and described pressure measurement capillary tube has measuring pressure passage, and described measuring pressure passage is connected with described pressure transmission passage, and the diameter of described measuring pressure passage is less than the diameter of described pressure transmission passage;
This pressure tap being opened on drueckelement sidewall forms an open conduit together with pressure transmission passage, the pressure measurement measuring pressure passage capillaceous being connected with this pressure tap.
2. small-diameter high-temperature heat-insulation pressure measuring unit as claimed in claim 1, is characterized in that, the diameter of described pressure transmission passage is more than the twice of described measuring pressure passage diameter.
3. small-diameter high-temperature heat-insulation pressure measuring unit as claimed in claim 1, is characterized in that, on the lateral wall of described drueckelement, is connected with diaphragm, and described protection membrane cover is located on described pressure tap.
4. small-diameter high-temperature heat-insulation pressure measuring unit as claimed in claim 3, is characterized in that, the pad of described diaphragm for being made by stainless steel material.
5. small-diameter high-temperature heat-insulation pressure measuring unit as claimed in claim 4, is characterized in that, described diaphragm is welded on the lateral wall place that described drueckelement is provided with described pressure tap.
6. small-diameter high-temperature heat-insulation pressure measuring unit as claimed in claim 1, is characterized in that, the described pressure measurement other end capillaceous is connected with capillary tube connector.
7. small-diameter high-temperature heat-insulation pressure measuring unit as claimed in claim 1, it is characterized in that, the two ends of described drueckelement convex with respectively connecting portion, and the diameter of described connecting portion is less than the diameter of described drueckelement, and described pressure measurement one end capillaceous is connected on described connecting portion.
8. small-diameter high-temperature heat-insulation pressure measuring unit as claimed in claim 1, is characterized in that, the diameter of described drueckelement equals the diameter of coiled tubing.
9. small-diameter high-temperature heat-insulation pressure measuring unit as claimed in claim 8, is characterized in that, described drueckelement is made by 1Cr18NiTi stainless steel material.
10. small-diameter high-temperature heat-insulation pressure measuring unit as claimed in claim 1, is characterized in that, in described pressure transmission passage, described measuring pressure passage, is filled with transmission medium, and described transmission medium is nitrogen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110362196.5A CN102383782B (en) | 2011-11-15 | 2011-11-15 | Small-diameter high temperature heat-insulating pressure measuring unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110362196.5A CN102383782B (en) | 2011-11-15 | 2011-11-15 | Small-diameter high temperature heat-insulating pressure measuring unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102383782A CN102383782A (en) | 2012-03-21 |
| CN102383782B true CN102383782B (en) | 2014-11-26 |
Family
ID=45823569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110362196.5A Active CN102383782B (en) | 2011-11-15 | 2011-11-15 | Small-diameter high temperature heat-insulating pressure measuring unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102383782B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201802393U (en) * | 2010-09-15 | 2011-04-20 | 中国石油天然气股份有限公司 | Directional automatic opening capillary pressure testing device |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1028560C (en) * | 1991-03-18 | 1995-05-24 | 南京航空航天大学 | Pressure-measuring probe |
| US5678557A (en) * | 1993-12-23 | 1997-10-21 | Abbott Laboratories | One hand push button intraflo |
| CN2269463Y (en) * | 1996-06-07 | 1997-12-03 | 辽河石油勘探局钻采工艺研究院 | Four parameter testing instrument for high temperature and high pressure |
| CN201041033Y (en) * | 2006-09-29 | 2008-03-26 | 中国石油天然气股份有限公司 | Capillary dynamic stratification pressure monitor |
| CN201170093Y (en) * | 2007-09-18 | 2008-12-24 | 中国石油天然气股份有限公司 | Multi-point temperature pressure dynamic monitoring instrument of horizontal well |
| CN101587760B (en) * | 2009-05-07 | 2011-01-19 | 中国石油辽河油田钻采工艺研究院 | Cable of downhole monitoring system of horizontal steam injection well and preparing method thereof |
| CN102146792B (en) * | 2010-12-03 | 2013-11-06 | 中国石油天然气股份有限公司 | Temperature and pressure monitoring cable with protection tube and manufacturing method thereof |
| CN202325486U (en) * | 2011-11-15 | 2012-07-11 | 中国石油天然气股份有限公司 | Small-diameter high-temperature heat-insulation pressure measuring unit |
-
2011
- 2011-11-15 CN CN201110362196.5A patent/CN102383782B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201802393U (en) * | 2010-09-15 | 2011-04-20 | 中国石油天然气股份有限公司 | Directional automatic opening capillary pressure testing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102383782A (en) | 2012-03-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201170093Y (en) | Multi-point temperature pressure dynamic monitoring instrument of horizontal well | |
| CN205936422U (en) | Double -walled drilling rod | |
| CN202249803U (en) | Intelligent petroleum drill pipe joint capable of power and signal transmission | |
| CN105089629B (en) | Horizontal well bar conveying well measuring method | |
| CN205445594U (en) | Baked wheaten cake optic fibre warm -pressing monitoring system that takes in and send out | |
| CN102383782B (en) | Small-diameter high temperature heat-insulating pressure measuring unit | |
| CN102146792B (en) | Temperature and pressure monitoring cable with protection tube and manufacturing method thereof | |
| CN202325486U (en) | Small-diameter high-temperature heat-insulation pressure measuring unit | |
| CN203959096U (en) | Gas storage is observed well completion tubular column | |
| CN201068794Y (en) | Down-hole data wireless exchange set | |
| CN203285334U (en) | Radial horizontal well steering device | |
| CN203655188U (en) | Coiled tubing roller device | |
| CN101182768B (en) | Ultra-thick oil down-hole temperature, pressure double parameter (multi-point) dynamic measurement system | |
| CN203081290U (en) | Radial well casing pipe drilling device | |
| CN202165027U (en) | Drill stem for directional traversing | |
| CN203978350U (en) | Oil pipe machinery locator | |
| CN204113278U (en) | A kind of gas storage test string | |
| CN202064942U (en) | Shearing analogue device for immediate vicinity of wellbore for combined cylinder barrel | |
| CN202039838U (en) | Plug water separator with multiple conical indenter sections | |
| CN201083125Y (en) | High-temperature high-pressure testing cable for oil field horizontal well heating power exploitation | |
| CN203796210U (en) | Wellhead sealing device for communication | |
| CN203531835U (en) | High-temperature high-pressure full-drift-diameter shear pin packer | |
| CN203081322U (en) | Oil field underground extension tube for torque transmission | |
| CN204754806U (en) | Direction of pipe transmission special use in pit righting device | |
| CN105089631A (en) | Horizontal well rod conveying dynamic logging method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |