Wellsite

The diagram below shows a typleal arrangement of land based facilities in a situation where there are some eonstraints on the location of wellsites and processing plant. 

The first function of a wellsite is to accommodate drilling operations. However, a wellsite must be designed to allow access for future operations and maintenance activity, and in many cases provide containment in the event of accidental emission. Production from a single wellhead or wellhead cluster is routed by pipeline to a gathering station, often without any treatment. In such a case the pipeline effectively becomes an extension of the production tubing. If a well is producing naturally or with assistance from a down... 

The fluids from the reserve pit may be hauled away from location for disposal, reclaimed insitu, or pumped into the wellbore given a dryhole. The operator of the wellsite is responsible for the transportation offsite of the drilling fluids. The fluids may be considered hazardous in nature due to the toxic characteristics of most drilling and completion fluids. 

Congress, in an attempt to promote mineral development in the United States, has exempted most hazardous wastes produced at the wellsite under the Resource Conservation and Recovery Act (RCRA) Subtitle C regulations. Hazardous wastes are listed due to inherent characteristics of ... 

While a number of wastes produced at the wellsite are considered characteristic hazardous waste, some wastes fall under the nonhazardous description. The regulation of these fall under RCRA Subtitle D. Initially Subtitle D wastes were regulated to control dumping of domestic trash and city runoff. The EPA is considering promulgating regulation of certain oil and gas wastes under Subtitle D [231]. 

Under the RCRA exemption, wastes intrinsically associated with the exploration and development of oil and gas do not have to follow Subtitle C regulations for disposal. Under Subtitle C, hazardous wastes must follow strict guidelines for storage, treatment, and transportation and disposal. The cost of handling materials under the Subtitle C scenario is overwhelming. Under the exemption, the operator is allowed to dispose of wellsite waste in a prudent manner and is not obliged to use licensed hazardous waste transporters and licensed Treatment, Storage, and Disposal Facilities (TSDF). 

Gravitation A r, SEPARATORS, described in Parts I and 2 of this series, remove almost all of the water in produced fluids. However, contract specifications may call for almost complete water lemoval and it is sometimes necessary to include a heater or electrostatic treater unit as part of wellsite process equipment. 

Mordenite Arduinite, flokite, pseudonatrolite, ptilolite, steelite Natrolite Galaktite, mesotype, fargite, laubanite Phillipsite Christianite, wellsite Stilbite Desmine, epidesmine, foresite Thomsonite Comptonite, faroelite, mesole, mesotype... 

The spectroscopic determination of benzene and toluene at the wellsite was analyzed by [84P1]. 

To ensure your safety at a wellsite, consider the following types of protective measures ... 

Exploratory wells that may still prove to be uneconomical have to be plugged and abandoned (commonly referred to as P A). These activities have to carefully completed to avoid leaks or seepages later on. A few wells that were not property plugged from early drilling periods had a separate concern of small children falling into the wellsite borehole. Where these incidents occurred it resulted in dramatic rescues and unfavorable publicity for the industry. 

Canadian Wellsite http //www.canadian-wellsite.com/ (accessed July 23, 2010). Designed specifically for the Canadian oilpatch. Some sections require subscription access. Free access is available to the oilfield directory, classifieds, evenfs, software, and discussion group. 

Thompson, K., and R.D. Gdanski. 1993. Laboratory study provides guidelines for diverting acid with foam. SPE Production and Facilities. November. King, G. E., and G. B. Holman. Acidizing Quality Control at the Wellsite. 1982. Tulsa Amoco Production Research Co. 

As mentioned in chapter 6, a number of years ago. King and Holman of the Amoco Production Company authored a booklet entitled Acidizing Quality Control at the Wellsite A section of that booklet details the steps that should be taken to ensure the quality of an acidizing treatment. Their recommendations (italicized in the following sections) still apply today. This chapter presents a modified version of the quality control steps presented in that booklet, with commentary. 

King, G. E., and G. B. Holman. 19S2. Acidizing Quality Control at the Wellsite. Tulsa Amoco Production Research Co. 

Thomsonite NaCa2Al5SisO2 0 6H2O Wellsite (Ba, Ca, K2)Al2Si30io 3H20 Zeolites X and Y. See Faujasite. 

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