Assembly for Measuring Temperature of Materials Flowing Through Tubing in a Well System
US-2015377008-A1 · Dec 31, 2015 · US
Downhole temperature calculation
US9739137B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9739137-B2 |
| Application number | US-201414254108-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 16, 2014 |
| Priority date | Apr 16, 2013 |
| Publication date | Aug 22, 2017 |
| Grant date | Aug 22, 2017 |
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Abstract
Official abstract text for this publication.
A method for calculating a value representative of a downhole temperature in a hydrocarbon well, wherein the well includes production tubing inside an outer tubing, an annulus is provided between the production tubing and the outer tubing, and the annulus receives a hydraulic control line supplying hydraulic fluid for the control of a downhole device, the method including sensing the pressure of hydraulic fluid in the control line at the wellhead, and using a measurement of the pressure to calculate the value representative of the downhole temperature.
First claim
Opening claim text (preview).
What is claimed is: 1. A method of calculating a value representative of a downhole temperature in a hydrocarbon well, wherein the hydrocarbon well comprises a production tubing inside an outer tubing, an annulus is provided between the production tubing and the outer tubing, and the annulus receives a hydraulic control line supplying hydraulic fluid for the control of a downhole device, the method comprising: sensing a pressure of the hydraulic fluid in the hydraulic control line at a wellhead; and using the sensed pressure of the hydraulic fluid in the hydraulic control line to calculate the value representative of the downhole temperature. 2. The method according to claim 1 , wherein the downhole device is at a first downhole zone, the hydrocarbon well further comprises an additional downhole device at a second downhole zone, and the annulus further receives an additional hydraulic control line supplying hydraulic fluid for the control of the additional downhole device, the method further comprising: sensing a pressure of the hydraulic fluid in the additional hydraulic control line at the wellhead to calculate the value representative of the downhole temperature. 3. The method according to claim 2 , wherein the sensing of the pressure of the hydraulic fluid in the additional hydraulic control line is carried out at a tree at the wellhead. 4. The method according to claim 1 , wherein the sensing of the pressure of the hydraulic fluid in the hydraulic control line is carried out at a tree at the wellhead. 5. The method according to claim 1 , further comprising: sensing a temperature of a production fluid at the wellhead; and using the sensed temperature of the production fluid to calculate the value representative of the downhole temperature. 6. The method according to claim 5 , wherein the sensing of the temperature of the production fluid is carried out at a tree at the wellhead.
Assignees
Inventors
Classifications
- E21B47/07Primary
Temperature · CPC title
Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 · CPC title
- G01K7/42Primary
Circuits effecting compensation of thermal inertia; Circuits for predicting the stationary value of a temperature · CPC title
- E21B47/06Primary
Measuring temperature or pressure · CPC title
Fixed Constructions · mapped topic
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- What does patent US9739137B2 cover?
- A method for calculating a value representative of a downhole temperature in a hydrocarbon well, wherein the well includes production tubing inside an outer tubing, an annulus is provided between the production tubing and the outer tubing, and the annulus receives a hydraulic control line supplying hydraulic fluid for the control of a downhole device, the method including sensing the pressure o…
- Who is the assignee on this patent?
- Vetco Gray Controls Ltd, Ge Oil & Gas Uk Ltd
- What technology area does this patent fall under?
- Primary CPC classification E21B47/07. Mapped technology areas include Fixed Constructions.
- When was this patent published?
- Publication date Tue Aug 22 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).