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Oilfield, China

Wang G.,Petrochina | Peng J.,Petrochina | Liu F.,Petrochina | Liu Y.,Petrochina | And 3 more authors.
Well Testing | Year: 2011

By full use of prominent features of the pressure derivative being more sensitive than the pressure itself, through statistical analysis for the start time of the transition section and the radial flow section of the double logarithmic curve of pressure and its derivative and by utilizing the main stage features of them, combining with reservoir static and dynamic parameters closely, the right conclusions are made, principles and conditions of selecting fractured layer to low permeability reservoir are proposed. Source

Cheng G.,Bohai Drilling & Exploration Engineering Co. | Shi G.,Bohai Drilling & Exploration Engineering Co. | Ma X.,Bohai Drilling & Exploration Engineering Co. | Luo K.,Erlian Branch Company | Zhu Z.,Erlian Branch Company
Well Testing | Year: 2015

The high temperature and high pressure surface test has difficulties of high formation pressure, high temperature, containing H2S and CO2, being easy of sand production, being easy to form natural gas hydrates. If the operation equipment and process cannot be reasonably designed, it may lead to flow leakage, even to be fire explosion, operation of it has a big safety risks. According to need of surface test to NiuDong buried hill reservoir, optimization and implementation effect of the high-pressure oil sulfur fully enclosed surface measurement process is illustrated. In order to solve hazards and safety problems of high pressure leakage, and hydrogen sulfide poisoning and gas explosion to equipment, personnel caused by high risk test condition of high pressure, high temperature, high yield of condensate oil and gas, containing hydrogen sulfide in NiuDong buried hill, the effective solutions are put forward which can better meet the needs of surface test to the high temperature and high pressure well. ©, 2015, Well Testing. All right reserved. Source

Zhang Y.,Chinese Academy of Petroleum Exploration and Development | Hu G.,Chinese Academy of Petroleum Exploration and Development | Ren Y.,China National Petroleum Corporation | Luo C.,China National Petroleum Corporation | And 2 more authors.
Well Testing | Year: 2015

Through analysis of two usually applied types of Jet pumps technical characteristics for hydraulic switch sliding sleeve and mechanical shock switch several times sliding sleeve, technical deficiencies are pointed out respectively that are used in fields of test, pump, reservoir reformation and pump. Combing with site case, problems are discussed and analyzed of the former that can not acquire accurate liquid index, and transformation in the high-pressure pump note, fast returned to row after transformation, and protection casing, the later that has problem of relative reliability not to be high, recommends are proposed to carry out research of hydraulic operation, and repeatedly switch, and pros and cons row liquid jet pump. ©, 2015, Well Testing. All right reserved. Source

Wang G.,Oil and Gas Well Testing Company | Liu F.,Oil and Gas Well Testing Company | Chen Y.,Oil and Gas Well Testing Company | Huang L.,Oil and Gas Well Testing Company | And 3 more authors.
Well Testing | Year: 2012

Well test is operated to Aer3 horizontal 1 well, and the major reservoirs of the Aer3 fault block is evaluated, meanwhile taking advantage of high precision electronic pressure gauge to receive the interference information on the tested well when fracturing operations to Aer3 horizontal 2 at later period in the secondary shut-down well, the well test and monitoring of fracturing dynamic interfere is completed actually. On the of the test wells completed late Various stages of switching wells may also be arranged in accordance with the science of geology and engineering construction design, a reasonable time, every kinds of geological parameters is not only taken, but also the pressure curve of the fracture of the adjacent well to the tested wells is obtained. By production and pressure change, it is analyzed that whether the fractures of the adjacent wells communicate to the upper testing intervals in the vertical or not. Source

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