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Pattern matching to detect defects in rod lift downhole cards

A defect, image technology, applied in the field of pattern matching for detecting defects in rod-lift downhole cards, which can solve problems such as unsatisfactory operation and performance, incomplete pump filling, gas interference, etc.

Pending Publication Date: 2020-11-20
威盖特技术美国有限合伙人公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Rod pump deficiencies that can lead to unsatisfactory operation and performance
These defects can include incomplete pump filling, gas disturbances, tube movement, excessive fluid slippage (e.g., indicating rod pump wear), bottom pump markings, top pump markings, erratic valve action (e.g., due to solids in the well, Wear ball, warning seat, recessed ball, recessed seat, etc.), plunger jamming or excessive friction (e.g., due to solids between plunger and barrel), etc.

Method used

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  • Pattern matching to detect defects in rod lift downhole cards
  • Pattern matching to detect defects in rod lift downhole cards
  • Pattern matching to detect defects in rod lift downhole cards

Examples

Experimental program
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Embodiment Construction

[0047] Machinery, such as rod pumps employed in oil production, can be monitored to identify unsatisfactory operation and performance. For example, measurements of the force and corresponding motion (called stroke) of a rod pump can be measured and transformed into a plot with force on one axis and stroke on the other. This map can be transformed into an image (called a downhole card) and compared to a predetermined image (called a reference card) containing known problematic behavior. If the downhole and reference cards match, it can be determined that the rod pump is experiencing the known problematic behavior represented by the reference card. Currently, these comparisons are performed manually by technicians. However, performing manual comparisons can be time-consuming due to the variety of possible problem behaviors. Furthermore, different technicians may potentially make different subjective judgments as to whether the gauge and downhole cards match each other, resulti...

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PUM

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Abstract

Data characterizing a load on a rod of a down-hole pump at different positions of a stroke of the rod can be received. An image characterizing the load of the rod at the different positions of the stroke can be determined. A defect in operating conditions of the down-hole pump can be determined. The determining can include comparing the image to a set of predetermined images with associated defects. The determined defect can be provided.

Description

[0001] Cross References to Related Applications [0002] This application claims U.S. Provisional Application No. 62 / 622730, entitled "PATTERN MATCHING TO DETECT DEFECTS IN ROD LIFT DOWNHOLE CARDS," filed January 26, 2018. Interest, the entire contents of which are incorporated herein by reference. Background technique [0003] Rod pumps are devices that can be used to pump oil on land. Holes may be drilled into the ground and consolidated with well casings to create vertical cavities. A series of assembled rods (called poles) are inserted into the vertical cavity and moved up and down using a rod pump. A plunger can be attached to the bottom of the rod string to transport oil from the bottom of the well. On the downstroke, the plunger can fill with oil, and on the upstroke, the oil can be delivered to the surface where it can be extracted and placed in a bucket. [0004] Defects in rod pumps can lead to unsatisfactory operation and performance. These defects can include ...

Claims

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Application Information

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IPC IPC(8): G06T7/00G06K9/62G01L5/00
CPCG06T7/001G06T2207/30164G06T2207/20081G06V10/752G06V10/761G06F18/22G01L5/0042G06T7/0002G06F18/2113G06F18/231
Inventor 马哈德万·巴拉苏布拉马尼亚姆希亚姆·西瓦拉马克里什南阿伦·苏布拉曼尼亚
Owner 威盖特技术美国有限合伙人公司