The Experts below are selected from a list of 177 Experts worldwide ranked by ideXlab platform
Yang Jian - One of the best experts on this subject based on the ideXlab platform.
-
Application of Phenolic Resin in Oilfield Chemistry
Drilling Fluid & Completion Fluid, 2020Co-Authors: Yang JianAbstract:This paper discussed the use of phenolic resin and its modified products(such as sulfonated methyl phenolic resin,SMP) in oilfield chemistry.The mechanism of action of SMP was researched.Also introduced in this paper were the use of the phenolic resin and its modified products in oil production,oil Well Workover,lost circulation control,demulsification,oil Well cementing,oil Well fracturing and corrosion inhibition.
-
Status quo and development of Workover rigs in Sichuan Oilfield
Drilling & Production Technology, 2020Co-Authors: Yang JianAbstract:Workover equipment has regular and non-regular equipment.Regular Workover equipments are divided into Workover rig and tractor hoist.Non-regular Workover equipments are coiled Workover rig,snubbing unit and all kinds of matching tools.Regular Workover equipment is adopted in Well Workover in Sichuan.The paper analyses functions and characteristics of all kinds of Workover rig,proposes out existing problems during Well Workover.Finally,improvement and development have been presented about Workover rig in Sichuan Oilfield.
Zhang Bo - One of the best experts on this subject based on the ideXlab platform.
-
The Heavy Oil Well Lowcost Workover Treatment Technology
Journal of Hebei Energy Institute of Vocation and Technology, 2020Co-Authors: Zhang BoAbstract:Heavy oil recovery is by means of steam huff and puff,namely in the Wellbore injecting into the high temperature and high pressure steam to reduce the viscosity of crude oil,so as to achieve the purpose.Due to heavy oil reservoir with loose reservoir,high porosity,good permeability,and after many rounds of steam injection,it is very easy to cause problems such as reservoir sand plugging,seepage pore blockage,water cut rising,string and related tools breaking,off,block,steam absorption profile inequality,casing damage,making heavy oil Well operating frequency increase.After years of research and practice,a series of heavy oil Well Workover technologies have been formed,which provide technical assurance for heavy oil Well development and production in Liaohe Oilfield.
Katarina Perić - One of the best experts on this subject based on the ideXlab platform.
-
Analysis of Workover causes for Wells with installed downhole sucker-rod pumps
2020Co-Authors: Igor Medved, Petar Mijić, Katarina PerićAbstract:Primary oil production represents the process of production only by exploiting the natural reservoir energy (reservoir pressure), i.e. eruption phase. This mode of production lasts until the reservoir pressure drops, so that it is no longer capable of pushing the oil to the surface. Oil Wells which can't erupt, must apply one of the methods of artificial lifting. The artificial lift system of oil production by using downhole sucker-rod pumps with piston rods is the oldest system for lifting fluids from Wellbore to the surface. It is also the most widespread artificial lift system in practice in the world (over 80%). The basic principle of the operation of a downhole sucker-rod pumps is based on the transfer of the drive energy from the surface to the pump by piston rods. In principle, downhole sucker-rod pumps with piston rods can be applied in oil Wells from depth of 500 to 2500 m while enabling production ranging from 1 to 100 and more m3/d of liquid. This system is suitable for Wells with a smaller gas factor and consolidated production layers. The advantage of downhole sucker-rod pumps is their efficiency and economy because initial capital investments per Well are lower. The disadvantages of downhole sucker-rod pumps are higher maintenance costs, i.e. more frequent Workovers. This paper analysis the most common causes for Well Workover that produce oil with downhole sucker-rod pumps and recommendations in order to reduce their number.
Han Weiye - One of the best experts on this subject based on the ideXlab platform.
-
Technical status and development direction of Workover operation of PetroChina
Petroleum Exploration and Development, 2020Co-Authors: Li Yiliang, Guan Baoshan, Bi Guoqiang, Wang Jialu, Weng Dingwei, Huang Shouzhi, Han WeiyeAbstract:Abstract Through a comprehensive review of the development status of Workover technology of PetroChina Company Limited (PetroChina), this paper presents the connotation of Workover operation under the background of the new era, the latest progress of Workover operation in the respects of equipment, tools, technology and the construction of information and standardization. The gaps between PetroChina and foreign counterpart in Workover technology are as follows: the level of automation and intellectualization of tools and equipment is relatively low, the snubbing operation in gas Wells characterized by HT/HP and high H2S is lagged behind; water plugging in the long horizontal Wellbore needs to be further developed, coiled tubing and its relevant equipment for ultra-deep Well operation has to be optimized; informationization, standardization and big data application of Workover operation need to be started. Based on this as Well as the development status of Workover technology in China and the technical difficulties faced in the future, eight suggestions for future development are put forward: (1) strengthen the dynamic understanding of reservoir and improve the pertinence of Workover schemes; (2) develop the general overhaul technology in a systematical way to tackle issues of seriously problematic Wells; (3) put more efforts into the research of horizontal Well Workover operation and develop relevant technology for long horizontal section operation; (4) improve the snubbing technology and extend its applications; (5) expand the capacity of coiled tubing operation and improve the level of special operations; (6) develop automatic Workover technology into the field of artificial intelligence; (7) promote clean operation in an all-round way and build green oil and gas fields; (8) perfect the informationization construction to realize the sharing of Workover resources.
J.h. Shnkoor - One of the best experts on this subject based on the ideXlab platform.
-
Wireline installed sand screen saves expensive Well Workover
1996Co-Authors: J.h. ShnkoorAbstract:Through-tubing sand control methods are becoming increasingly popular as an economical means of remediation for Wells with sand control problems. In November 1994, a field trial of this technology using a Pall Stratacoil Screen was conducted by Sabah Shell Petroleum Co. Ltd. in Sandy field, Sabah, Malaysia. It proved successful in reinstating production with wireline techniques from a zone that had been shut-in for several years, without incurring the high cost of contracting a Workover rig. Since the installation, the Well has been producing for 18 months with an acceptable level of sand production, i.e., less than 10 ppb. This paper reviews the design, performance and cost benefits of this system.
