Coated oil and gas well production devices

A technology for production devices and oil and gas wells, which is applied to drilling driving devices, drilling equipment, wellbore/well components, etc. in the wellbore, and can solve problems such as excessive friction drag resistance, wellbore restriction, failure, etc.

Active Publication Date: 2012-02-22
EXXON RES & ENG CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Screens and base pipes are subject to frequent erosion and corrosion and can fail due to sand "cutting"
Additionally, in highly deviated wells, the frictional drag encountered while feeding the screen into the wellbore may be excessive and limit the use of these devices, or the length of the wellbore may be limited by the frictional drag that can be screened. Limitation on the maximum depth at which operations can be run

Method used

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  • Coated oil and gas well production devices
  • Coated oil and gas well production devices
  • Coated oil and gas well production devices

Examples

Experimental program
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Effect test

example

[0269] Illustrative example 1:

[0270] DLC coating was applied on 4142 steel substrate by vapor deposition technique. The DLC coating has a thickness ranging from 1.5 to 25 microns. The hardness was measured to be in the range of 1,300 to 7,500 Vickers hardness numbers. Laboratory tests based on ball-on-disk friction geometry have been performed to demonstrate the friction and wear properties of the coatings. Quartz balls and mild steel balls are used as mating surface materials to simulate open and cased holes, respectively. In an ambient temperature test, DLC coatings and commercial prior art hardfacing coatings were tested against quartz mating facing materials in "dry" or ambient air conditions with a normal load of 300g and a sliding velocity of 0.6m / s to simulate open hole conditions. available in as Figure 19 Improvements in friction performance (reduction in coefficient of friction) of up to 10 times that of uncoated 4142 steel and hardening were achieved in the...

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Abstract

Provided are coated oil and gas well production devices and methods of making and using such coated devices. In one form, the coated oil and gas well production device includes an oil and gas well production device including one or more bodies, and a coating on at least a portion of the one or more bodies, wherein the coating is chosen from an amorphous alloy, a heat-treated electroless or electro plated based nickel-phosphorous composite with a phosphorous content greater than 12 wt%, graphite, MoS2, WS2, a fullerene based composite, a boride based cermet, a quasicrystalline material, a diamond based material, diamond-like-carbon (DLC), boron nitride, and combinations thereof. The coated oil and gas well production devices may provide for reduced friction, wear, corrosion, erosion, and deposits for well construction, completion and production of oil and gas.

Description

technical field [0001] The present invention relates to the field of oil and gas well production operations. The invention more particularly relates to the use of coatings to reduce friction, wear, corrosion, erosion and deposits on oil and gas well production equipment. Such coated oil and gas well production equipment includes drilling rig equipment, marine riser system, tubular items (casing, tubing and drill string), wellheads, trees and valves, completion strings and equipment, formation and gravel face completion tools, artificial lift equipment, and workover and potential drilling equipment. Background technique [0002] Oil and gas well production presents fundamental mechanical problems, the correction, repair or mitigation of which can be cost-prohibitive or even prohibitive. Friction is ubiquitous in oil fields, equipment in moving contact wears out and loses their original dimensions, equipment can deteriorate due to corrosion and erosion, and deposits on equip...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B4/00
CPCE21B17/042E21B17/1085E21B41/00
Inventor J·R·贝利E·A·O·比迪格尔N-R·V·班加鲁A·奥赛克森H·金C·S-H·耶M·D·巴里M·T·赫克尔M·D·埃尔塔斯
Owner EXXON RES & ENG CO
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