The Experts below are selected from a list of 45 Experts worldwide ranked by ideXlab platform

Yang Yun-d - One of the best experts on this subject based on the ideXlab platform.

  • Casing Hanger Internal Pressure Structural Safety Analysis
    Oil Field Equipment, 2014
    Co-Authors: Yang Yun-d
    Abstract:

    As well structure widely has been used non-standard Casing,so it is necessary to re-develop non-standard Casing Hanger.In this paper,by adoption of 81/8″Casing Hanger,theoretical calculation and finite element simulation combined analysis were used.Under the 105MPa,the pressure of Casing Hanger has been tested the strength.Studies show that:under the Casing Hanger pressure test processing,16mm Wall thickness withstood the maximum pressure120.336 MPa.Casing Hanger packer has been completed,with maximum stress 437.3 MPa,which lower yield strength of the Ni-based alloy.Casing Hanger strength has been in a safe range.This research method can be extended to other non-standard Casing Hanger development,the results will not only be able to meet the engineering requirements,but also to ensure the normal drilling operations wells has very important significance.

S. Landriault - One of the best experts on this subject based on the ideXlab platform.

  • Pushing the Limits of a Subsea Wellhead System's 8.4MM lb. Compressive and 17.5 KSI Internal Pressure Capacity With All-Metal Seals
    Offshore Technology Conference, 2013
    Co-Authors: Amin Radi, S. Landriault
    Abstract:

    The operating requirements for subsea wellhead systems suitable for use in high-pressure, high-temperature (HP/HT) applications are rapidly approaching the limits for existing subsea wellhead systems. Limiting factors include axial capacity, combined bending moment and axial capacity, and pressure containment. This paper describes an all-metal seal wellhead system for use in critical service environments where the total Casing loads are expected to exceed 4,000,000 lbf. The design loads are assumed to act in combination with extreme environmental loads, and with multiple cycles of BOP testing to 17,500 psi. The increase in load carrying capacity is accomplished by separating the load path along which the bending moment is reacted from the load path carrying the axial compressive load. In the design described in this paper, the bending moment is reacted using a field proven double-socketed interface, while axial loads are communicated to the conductor housing through a compressive load shoulder. The design also incorporates a 7-5/8 in. Casing Hanger that engages a second load path into the high-pressure housing. This load path is in turn used to communicate the Casing load and pressure end load to the high-pressure housing. Also required is the use of metal-to-metal seals throughout the wellhead system formore » pressure containment at high temperatures. Elastomeric seal components may degrade with exposure to corrosive fluids, or at elevated temperatures. The metal-to-metal seal selected for this wellhead system has been in use for the past five years, and has an excellent record in service.« less

Liu Lian - One of the best experts on this subject based on the ideXlab platform.

  • Strength analysis and optimization design for Casing Hanger neck based on ANSYS
    Journal of Chongqing University of Arts and Sciences, 2015
    Co-Authors: Liu Lian
    Abstract:

    Spindle Casing Hanger is a key part in oil wellhead. Its neck sustains internal and external pressure in working condition and pressure test,respectively. Limited to the suspension bushing diameter and connecting flange size,Hanger neck is thin in the wall thickness. Therefore,the strength calculation and the finite element method for the Casing Hanger neck are applied to ensure the safety of products. Taking the232. 5 mm spindle type Hanger as an example,the use of ASME standard calculate neck can withstand the internal and external pressure. By using ANSYS finite element analysis and calculation,respectively under internal and external pressure or pressure inside and outside all under the neck can withstand the high pressure,and achieve the economic and reasonable wall thickness value. The method was put forward to avoid the neck failure in the process of engineering application.

K. W. Elliot - One of the best experts on this subject based on the ideXlab platform.

  • Real-time feedback for subsea Casing-Hanger landing operations
    2020
    Co-Authors: T.j. Allen, J.a. Burton, M. T. Worsley, K. W. Elliot
    Abstract:

    An intelligent running tool, a smart tool, for subsea Casing-Hanger landing operations provides feedback of critical parameters while landing and cementing the Casing and while setting and testing the Casing-Hanger seal assembly subsea. Two-way communication between the rig floor and the running tool in the subsea wellhead provides real-time data to make quick informed decisions regarding operations. The information provides positive feedback of the Casing-Hanger position and status of the seal assembly.

Cnooc Limite - One of the best experts on this subject based on the ideXlab platform.

  • Application of Tieback outside Casing in Horizontal Wells Drilled on Semi-Submersible Platforms
    Petroleum Drilling Techniques, 2014
    Co-Authors: Cnooc Limite
    Abstract:

    Pipe-sticking occurred in a well drilled on semi-submersible platform in Western South China Sea during running the244.5mm Casing at 2 546m,35maway from the designed depth 2 581m.Multiple measures were tried but failed,then the Casing had to be cut and Casing external tieback technique was used to tieback Casing so that the Casing Hanger could land on the subsea wellhead and besealed.The tieback process included:cut and retrieved Casing and Casing Hanger at 40-60mbelow the mud line,dropped mill shoe to mill 0.2-0.6mon Casing scarfing,dropped the tool of external Casing tieback patch and made the initial Casing into Casing external tieback patch until the Casing Hanger land on the subsea wellhead so that the outer Casing tieback patch could connect with original Casing;applied pressure in the Casing external tieback patch tool and tested the seal;cut at 203.02mand retrieve nine244.5mm Casing joints and Casing Hanger,milling 0.24mon Casing scarfing,running Casing external tieback patch to 205.40m,pressure test at 20.69 MPa,butted and sealed Casing smoothly.Field application showed that Casing external tieback would not reduce the inner diameter of the existing pipe string so ensured Casing drift,the sealing life could meet the requirements of oilfield development.It was able to solve the semi-submersible platform Casing problem when Casing could not reach the designed position.