• sand control
    Petroleum - English

    Sand Control

      Consequences of sand production: • Wellbore fill. • Equipment problems due to sand fill. • Sand erosion of downhole and surface equipment. • Sand accumulation on surface and Sand Disposal. • Production Loss. • Casing / Liner Collapse. Forces Aiding in Resisting Sand Production: • Intergranular frictional forces and bonding (cementing) help resist grain movement • Capillary Pressure adds further grain-to-grain bonding. Forces Contributing to Sand Production: • Pore pressure relieves frictional forces. • Production of wetting phase reduces capillary pressure forces. What causes sand production? • Totally or weakly unconsolidated formations. • Changing stresses in the near wellbore area. • Water Production. Sand Production Mechanism Primer: – Rock shear collapse owing to in situ…

  • oilfield
    Petroleum - English

    Oil Well Planning

    How to plan for an Oil Well? Drilling optimization requires detailed engineering in all aspects of oil well planning, drilling implementation, and post-run evaluation Effective well planning optimizes the boundaries, concstraints, learning, nonproductive time, and limits and uses new technologies as well as tried and true methods. Use of decision support packages, which document the reasoning behind the decision-making, is key to shared learning and continuous improvement processes. It is critical to anticipate potential difficulties, to understand their consequences, and to be prepared with contingency plans. Post-run evaluation is required to capture learning. Many of the processes used are the same as used during the well planning phase, but are conducted using new data from the recent drilling…

  • OilWell Drilling Books Page.4

    the biggest collection of oil well drilling books such as Drilling bits, Managed Pressure drilling known as MDP, wireline, casing and well testing, all you have to do is to press on Download to get any book.   Basics in Drilling in Oil and Gas Fields Download   Drilling and Completion Note  75 MB Download    Drilling Reference Series Download   Choke Performance Download   WireLine Logging Download Wireline Log Download  Casing and Liners for Drilling and Completion Download Standard Slickline Tools Download  Drilling Equipment Download  How the well is Drilled on Land?  PowerPoint Download   Advanced Drilling System Download   Drilling Process Download   Well Intervention Pressure Control IWCF   76…

  • natural gas
    Natural Gas - English

    Natural Gas Industry

    Natural Gas Terminology: Reservoir: Porous & permeable underground formation containing an individual bank of H.C.s confined by impermeable rock or water barriers characterized by a single natural pressure system. read also What is Natural Gas Field: Area of one or more reservoirs related to same structural feature. Pool: Contains one or more reservoirs in isolated structures. Wells can be classified as gas wells, condensate wells, and oil wells. Gas wells: Wells with producing gas-oil ration (GOR)>100,000 scf/stb. Condensate wells: Producing GOR < 100,000 scf/stb but > 5,000 scf/stb. Oil wells: Wells with producing GOR < 5,000 scf/stb Because NG is petroleum in a gaseous state, it is always accompanied by oil…

  • oil well
    Drilling

    Well Pressure Control

        Basically all formations penetrated during drilling are porous and permeable to some degree. Fluids contained in pore spaces are under pressure that is overbalanced by the drilling fluid pressure in the well bore. The borehole pressure is equal to the hydrostatic pressure plus the friction pressure loss in the annulus. If for some reason the borehole pressure falls below the formation fluid pressure, the formation fluids can enter the well. Such an event is known as a kick. This name is associated with a rather sudden flowrate increase observed at the surface. SURFACE EQUIPMENT A formation gas or fluid kick can be efficiently and safely controlled if the…