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Well

A technology of wellhead device and communication box, which is applied in wellbore/well components, surveying, earth-moving drilling, etc., can solve problems such as uncontrollable wells, damage, and impracticality

Active Publication Date: 2013-05-08
METROL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] However, all of the above systems may not actually be practical in the event of an emergency or blowout as there may be no access to the well or the well may not be controllable and the cable and / or data logging equipment may be damaged or destroyed

Method used

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Embodiment Construction

[0087] figure 1 A well 10 is shown comprising a series of casing strings 12a, 12b, 12c and 12d and adjacent annulus A, B between each string of casing and tubing strings within each string of casing. , C, D, the drill string 20 is disposed inside the innermost casing 12a.

[0088] As is common in the prior art, each casing string extends further into the well than the adjacent casing string outside it. Also, the lowest portion of each casing string is bonded in place due to the casing string extending below its outer adjacent string.

[0089] According to the invention, sensors 16 are provided on the casing above the bonded portion and on the drill string 20 . Additionally, other sensors (not shown) are positioned at various points within the cased and / or uncased borehole of the well. The sensors include transmitters to send data to a communication box 17 on the BOP 30 . In an alternative embodiment, a communications box or "black box" including a sonar transceiver and aco...

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PUM

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Abstract

A well comprising a borehole and wellhead apparatus, and a communication box at or proximate to the wellhead apparatus, the well comprising a plurality of sensors coupled to wireless transmitters which are adapted to transmit information from the sensors to the communication box; the sensors comprising at least one pressure sensor;and the well comprising a first memory device spaced apart from the communication box, the first memory device configured to store information from the sensors, wherein the communication box comprises a receiver adapted to receive signals from the transmitters, and at least one of a transmission device and a second memory device to transmit and / or store data received from the transmitters. The communication box is typically highly shock resistant (above 50 Gs for at least 5 ms, all axes) and so provides, together with other optional features, a system to monitor a well, especially before, during or after an emergency situation.

Description

technical field [0001] The present invention relates to an improved and improved system for determining conditions in wells, especially during or after emergency situations. Background technique [0002] The drilling of boreholes for oil and gas wells is a complex and expensive task in which reservoir characteristics are exploited such that the wells are designed and positioned to recover the hydrocarbons as efficiently as possible. [0003] A borehole is first drilled to a certain depth, and a string of casing is inserted into the borehole. The annulus between the casing and the borehole is then usually cemented in order to secure and seal the casing. The borehole is typically extended to further depths by continuing drilling below the cased borehole at a smaller diameter than the borehole was first drilled at, and the deeper borehole is then cased and cemented. The result is a borehole with a number of generally coaxial tubular columns / casing strings that progressively d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/12E21B47/14
CPCE21B47/12E21B47/0001E21B47/122E21B47/14E21B47/13E21B47/001
Inventor 肖·康普顿·罗斯莱斯利·大卫·贾维斯
Owner METROL TECH
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