Baker Hughes, Inc. is a private company headquartered in Houston, TX. The firm manufactures oilfield equipment.

China National Petroleum Corporation (CNPC) is an integrated international energy company. Based in China, we have oil and gas assets and interests in over 30 countries in Africa, Central Asia-Russia, South America, the Middle East and the Asia-Pacific. CNPC is China's largest oil and gas producer and supplier, as well as one of the world's major oilfield service providers and a globally reputed contractor in engineering construction, with businesses covering petroleum exploration & production, natural gas & pipelines, refining & marketing, oilfield services, engineering construction, petroleum equipment manufacturing and new energy development, as well as capital management, finance and insurance services. - Crude output: 110.33 million tons per year - Natural gas output: 79.86 billion cubic meters per year - Crude oil production: 53% of China's total - Natural gas production: 74% of China's total - Crude runs: 147.16 million tons per year - Domestic service stations: 19,840 - Domestic pipelines: 66,801 kilometers, including 16,369 kilometers for crude oil (nearly 67% of China's total), 40,995 kilometers for natural gas (77% of China's total) and 9,437 kilometers for refined products ( 48% of China's total) - Providing oilfield services and engineering construction in 63 countries around the world.

Part of Schlumberger NV, Schlumberger Technologies, Inc. is a company headquartered in Moorestown, NJ, that provides oilfield services such as distributing oil and gas information technologies and providing consulting services.

CNPC Great Wall Drilling Engineering Co., Ltd., established on 2008-07-18, Business scope includes contracting and its strength,scale,Foreign engineering projects that are compatible with performance;Dispatch foreign laborers to implement the above-mentioned overseas projects;oil,natural gas,Coalbed methane exploration and development and process reservoir geology,Geophysical prospecting,drilling,Logging,Mud logging,well test,Workover,Cementing,Completion,Technical services for underground operations and other projects;Detection and treatment of industrial solid waste, waste liquid and waste chemicals in oil and gas fields(Does not contain hazardous waste);Recycling and Wholesale of Recycled Materials;Construction General Contracting,Professional contractors,Labor subcontracting;project costs;Technical extension services;Repair machinery and equipment;technology development,technical consulting,Technical Services;Sales of special oil equipment and equipment,Labor protection supplies,Chemical Products(Does not contain dangerous chemicals and a class of precursor chemicals);Warehousing Services;Petroleum special equipment testing;Petroleum Professional Training;Equipment Leasing;Information Consulting;Import and export,Technology Import and Export,Agent import and export;Office space for rent;lease commercial premises;The following items are limited to branch offices in other cities:Manufacture of special equipment for environmental protection;Manufacture of special machinery for water resources;Manufacture of special equipment for oil and gas drilling and production;Oil drilling tools and accessories,Oil and gas drilling equipment parts processing,repair,lease,Sales;Engineering survey and design;Sell ​​lubricants,asphalt.(Market entities independently choose business projects in accordance with the law,Carry out business activities;Items subject to approval by law,Carry out business activities in accordance with the approved content after approval by relevant departments;Do not engage in the business activities of projects prohibited and restricted by the industrial policies of the state and this city.)

Weatherford Technology Holdings LLC engages in the provision of scientific and technological services. The company is headquartered in Houston, TX.

Jichen Intelligent Equipment Group Co., Ltd., established on 2009-12-16, Business scope includes general items:Intelligent basic manufacturing equipment manufacturing;General equipment manufacturing(Does not include special equipment manufacturing);Manufacturing of special equipment(Manufacture of licensed professional equipment not included);Manufacture of special instruments for geological exploration and seismic;Intelligent basic manufacturing equipment sales;Intelligent storage equipment sales;Information security equipment sales;Retailing of computer software, hardware and auxiliary equipment;Industrial Robot Sales;IC sales;Machine tool functional parts and accessories sales;Optoelectronic Device Sales;Sales of electronic components and electromechanical components;Sales of electronic measuring instruments;software sales;Artificial intelligence application software development;Intelligent control system integration;Research and development of intelligent robots;Internet of Things Technology Services;Mechanical and electrical equipment manufacturing;Data processing and storage support services;Manufacturing of computer software, hardware and peripheral equipment;Manufacturing of industrial control computers and systems;Virtual reality equipment manufacturing;Manufacturing of electronic components;Information Security Equipment Manufacturing;Internet equipment manufacturing;Network equipment manufacturing;Terminal test equipment manufacturing;Terminal metering equipment manufacturing;Cloud Computing Equipment Manufacturing;IoT device manufacturing;Digital Video Surveillance System Manufacturing;Manufacturing of mobile terminal equipment;Radar and supporting equipment manufacturing;Optoelectronic Device Manufacturing;Technical Services,technology development,technical consulting,Technology Exchange,technology transfer,Technology Promotion;Internet of things technology research and development;Mechanical equipment research and development;Industrial automatic control system device sales;Sales of special instruments for geological exploration and seismic;software development;Network and Information Security Software Development;Artificial intelligence general application system;Machinery and Equipment Leasing;Computer and communication equipment rental.(Except for projects subject to approval by law,Carry out business activities independently in accordance with the law with a business license)licensed items:Technology Import and Export;Import and export.(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments,The specific business items are subject to the approval documents or licenses of relevant departments)

Precision Energy Services provides oil-drilling services. It also provides wire line logging and completion services, fracturing and well stimulation, polycrystalline diamond compact drill bits, mechanical services and well abandonment services. The company is located in Calgary, Canada.

China Petroleum Logging Co. Ltd. is a company headquartered in Beijing, China and ultimately controlled by the Government of China, that provides wellbore technical services includes logging, cable completion logging, engineering logging, perforating, testing and related services.

China National Petroleum Corp. Drilling Research Institute (doing business as CNPC Drilling Research Institute) is a company headquartered in China ultimately controlled by the Government of China that produces, drills and supplies oil and gas products.

Part of Weatherford International plc, Weatherford/Lamb, Inc. is a company headquartered in Houston, TX, that engages in oil and gas extraction services.

Saudi Arabian Oil Co. is engages in the production, transportation, and sale of energy and chemicals. It also offers prospecting, exploring, drilling, extracting, processing, manufacturing, refining and marketing hydrocarbon substances. The company operates through the following segments: Upstream, Downstream, and Corporate. The Upstream segment consists of exploring for, developing and producing crude oil, natural gas and natural gas liquids exploration, field development and production. The Downstream segment includes refining and petrochemical manufacturing, supply and trading, distribution and power generation, logistics, and marketing of crude oil and related services to international and domestic customers. The Corporate segment refers supporting services including human resources, finance and IT not allocated to Upstream and Downstream. Saudi Arabian Oil was founded on May 29, 1933 and is headquartered in Dhahran, Saudi Arabia.

READ’s expertise is dedicated to production and integrity evaluation. They provide you with the high-value well intelligence you require to make qualified decisions about your wells, quickly. These facts are crucial to managing expected well performance, unwelcome surprises and the long-term economics of the asset. They know the stakes are always high in well integrity and production. That’s why They will work with you to understand the needs of every job, ensuring They provide clear, concise and understandable evaluation information, designed to minimise risk, maximise safety and deliver profitability.

Sichuan Zhaohong Oil and Gas Field Technology Co., Ltd., established on 2012-11-23, Business scope includes oil and gas field exploration and development technical services;Geophysical Geological Exploration Services;Engineering Geophysical Exploration Services;Special equipment for oil and gas wells,Instrumentation,Development of survey tools,Sales and technical service;Petroleum Engineering Technical Services;Oil and Gas Engineering Design Services;Petroleum machinery rental service;Petroleum machinery manufacturing and repair engineering design services;Decoration engineering design and construction;Import and export,Technology Import and Export(law,Except for items prohibited by administrative regulations,law,Projects restricted by administrative regulations can only be operated after obtaining a license);Sales:steel,mechanical product,building materials,Plumbing equipment,Electrical products,metallic material,Wujinjiaodian,Labor protection supplies,auto parts;Road transport of dangerous goods(With a road transport business license and operating within its business scope);car rental service;General cargo.(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments);Labor dispatch service(Operate with a valid license).

Shell Oil Company is the United States-based wholly owned subsidiary of Royal Dutch Shell, transnational corporation "oil major" of Anglo-Dutch origins, which is amongst the largest oil companies in the world. Approximately 80,000 Shell employees are based in the U.S. The U.S. headquarters are in Houston, Texas. The current president is Bruce Culpepper, a graduate of the University of Alabama. Shell Oil Company, including its consolidated companies and its share in equity companies, is one of America's largest oil and natural gas producers, natural gas marketers, gasoline marketers and petrochemical manufacturers.

PetroChina Co. Ltd. engages in the petroleum related products, services and activities. It operates through the following business segments: Exploration and Production; Refining and Chemicals; Marketing; Natural Gas and Pipeline; and Head Office and Other. The Exploration and Production segment involves exploration, development, production, and marketing of crude oil and natural gas. The Refining and Chemicals segment focuses on the refining of crude oil and petroleum products, production and marketing of primary petrochemical products, derivative petrochemical products, and other chemical products. The Marketing segment includes marketing of refined products and the trading business. The Natural Gas and Pipeline segment comprises transmission of natural gas, crude oil, and refined products and the sale of natural gas. The Head Office and Other segment relates to cash management and financing activities, the corporate center, research and development, and other business services supporting the operating business segments of the Group. The company was founded on November 5, 1999 and is headquartered in Beijing, China.

China Oilfield Services Ltd. is an investment holding company, which engages in the provision of offshore oilfield services. It operates through the following segments: Drilling Services, Well Services, Marine Support Services, and Geophysical Acquisition and Surveying Services. The Drilling Services segment provides oilfield drilling services. The Well Services segment includes the logging and downhole services, such as drilling fluids, directional drilling, cementing and well completion, and the sale of well chemical materials and well workovers. The Marine Support Services segment is composed of the transportation of materials, supplies and personnel to offshore facilities, moving and positioning drilling structures, the transportation of crude oil and refined products. The Geophysical and Surveying Services segment deals with offshore seismic data collection, marine surveying, and data processing services. The company was founded on February 15, 1982 and is headquartered in Langfang, China.

Schlumberger Technology BV, a subsidiary of Schlumberger NV, is a Dutch company located in The Hague. The firm provides gas and oil exploration services.

Dongying Depu Petroleum Technology Co., Ltd., established on 2008-06-04, Business scope includes general items:Technical Services,technology development,technical consulting,Technology Exchange,technology transfer,Technology Promotion;Instrument Manufacturing;Manufacture of special equipment for oil drilling;Instrument Repair;Sales of special instruments for geological exploration and seismic;software development;software sales;Sales of special equipment for oil drilling;Special equipment rental;IC sales;Optoelectronic Device Sales;Rubber Products Sales;Non-ferrous metal alloy sales;Metal Material Sales;Sales of special ceramic products;Leisure and sightseeing activities;spring sales;Office Supplies Sales.(Except for projects subject to approval by law,Carry out business activities independently in accordance with the law with a business license);licensed items:Import and export(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments,Specific business projects are subject to approval results)

Panjin Hengfeng Petroleum Technology Co., Ltd., established on 2008-03-04, Business scope includes design, production, processing and sales of downhole tools,Drilling accessories,rubber products,Instrumentation,Oil field special cable,Mechanical and electrical products below category II,Perforating equipment;Sell ​​Office Supplies,Labor protection supplies,Logging instrument,Computers and Consumables,auto parts,building materials,steel,Wire and Cable,the paper,Smelting charge,Machine tool accessories,electronic device,Single and double girder driving,Electric hoist and accessories,Bearing paint;Well Measures Services,Logging technical service(Projects that require national special permits,Operate after obtaining a license);wooden,tin packaging,Prefabricated house manufacturing,Processing and sales;Car rental,Realtor,Equipment Leasing;Mechanical parts processing,Manufacturing of other general parts.(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments.)