Latch tool

a technology of latching tool and toolstring, which is applied in the direction of tubing catchers, drilling accessories, and accessories for wellbore/wells. it can solve the problems of safety hazards for well operators, tool catcher devices that do not automatically operate, and catastrophic damage to toolstrings and wellbores

Inactive Publication Date: 2021-03-04
EXPRO NORTH SEA
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0008]It is an object of the present invention to provide a latch tool...

Problems solved by technology

If the tension exceeds the yield strength of the wire, the wire may break allowing the toolstring to fall back down the well and potentially causing catastrophic damage to the toolstring and the wellbore, and a safety hazard to operators of the well.
However, known tool catcher dev...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Latch tool
  • Latch tool
  • Latch tool

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

lass="d_n">[0023]The main components / assemblies of the bumper latch are shown in FIGS. 1 and 3. These include a substantially tubular anchor assembly 2 that has a longitudinal axis X. A core assembly 4 extends axially through the anchor assembly 2 and is mounted for sliding movement relative to the anchor assembly.

[0024]The anchor assembly 2 and the core assembly 4 together define a spring chamber 6 that extends parallel to the axis X and is located in the annular space between anchor assembly 2 and the core assembly 4. The upper end 6a of the spring chamber 6 is defined by the anchor assembly 2 and the lower end 6b is defined by the core assembly 4. The length L of the spring chamber 6 therefore changes as the core assembly 4 slides axially relative to the anchor assembly 2.

[0025]A compression spring 8 is located within the spring chamber 6 between the upper end 6a and the lower end 6b. In this embodiment the spring 8 comprises a plurality of disc springs (e.g. Belleville washers) ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

A latch tool for a wireline toolstring includes an anchor assembly that is attached to a support structure. A core assembly is configured for axial movement relative to the anchor assembly. The anchor assembly and the core assembly provide a spring chamber having a length that changes with axial movement of the core assembly. A spring opposes axial movement of the core assembly. A latch assembly includes at least one latching element that captures a coupling component. The spring provides a bias force that opposes axial movement of the core assembly in a latching direction, but permits axial movement of the core assembly in the latching direction when an axial force applied to the core assembly exceeds the bias force.

Description

[0001]This application claims priority to PCT Patent Appln. No. PCT / GB2019 / 050728 filed Mar. 15, 2019, which claims priority GB Patent Appln. No. 1806838.7 filed Apr. 26, 2018, which are herein incorporated by reference.BACKGROUND OF THE INVENTION1. Technical Field[0002]The present invention relates to a latch tool for use within a pressure control rig-up and wireline toolstring.2. Background Information[0003]A pressure control rig up is a package of assemblies that is used to extend the pressure containment of a wellbore to accommodate a wireline tool string.[0004]A wireline toolstring is a package of one or more tools and / or instruments that is lowered into a wellbore for sensing / instrumentation and / or well bore manipulation purposes, particularly in the oil and gas production industry.[0005]The wireline toolstring is lowered into the wellbore and retrieved by means of a wire and a winch. Upon retrieval of the toolstring to surface and reaching the top of the well the toolstring c...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): E21B19/10
CPCE21B19/10E21B19/008E21B31/18E21B23/01E21B40/00
Inventor MINNIS, ANDRE
Owner EXPRO NORTH SEA
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap