• drilling

    Water-Base Muds

        Drilling Muds A water-base drilling fluid is one that has water as its continuous or liquid phase. The types of drilling fluids are briefly described in the following lines. Freshwater muds are generally lightly treated or untreated muds having a liquid phase of water, containing small concentrations of salt, and having a pH ranging from 8.0 to 10.5. Oil-Base Muds differs from water base muds, Fresh water muds include the following types. Spud Muds These muds are prepared with available water and appropriate concentrations of bentonite and/or premium commercial clays. They are generally untreated chemically, although lime, cement, or caustic soda is occasionally added to increase viscosity and…

  • drilling

    how Drilling Fluid Additives are classified

          Each drilling fluid vendor provides a wide array of basic and specialty chemicals to meet the needs of the drilling industry. The general classification of drilling fluid additives below is based on the definitions of the International Association of Drilling Contractors (IADC): Alkalinity or pH control additives are products designed to control the degree of acidity or alkalinity of a drilling fluid. These additives include lime, caustic soda, and bicarbonate of soda. Bactericides reduce the bacteria count of a drilling fluid. Paraformaldehyde, caustic soda, lime, and starch are commonly used as preservatives. Calcium removers are chemicals used to prevent and to overcome the contaminating effects of anhydride…

  • drilling

    Oil-Base and Synthetic-Base Muds

    Drilling Mud Tests The field tests for rheology, mud density, and gel strength are accomplished in the same manner as outlined for water-based drilling mud. The main difference is that rheology is tested at a specific temperature, usually 120◦F or 150◦F. Because oils tend to thin with temperature, heating fluid is required and should be reported on the API Mud Report. see our Drilling Fluids Books section Sand Content Sand content measurement is the same as for water-base drilling mud except that the mud’s base oil instead of water should be used for dilution. The sand content of oil-base mud is not generally tested. HPHT Filtration The API filtration test result for oil-base drilling…

  • OilWell Drilling Books Page.5

    the biggest collection of oil well drilling books such as Drilling bits, Drilling Fluids, and Casing, links updated from time to time, all you have to do is to click on the icon under the required book name:   Casing Dimensions, Materials and Strength      Download Link  Drill Bit Technology Download Link 1     Download Link 2   Drilling Fluids Presentation    Download Link 1     Download Link 2   Introduction to Directional Drilling Download Link 1     Download Link 2   Well head Components      Download Link   BOPE – Description and Selection      Download Link Casing Heads Download Link 1     Download Link 2 Coordinates Systems    Download Link…

  • drilling mud
    Petroleum - Arabic

    Field Maintenance of Drilling Fluids

    الصيانة الحقلية لوحدة سوائل الحفر  Field Maintenance of Drilling Fluids مصطفى عبدالستار يضم سائل الحفر الية عند دورانة داخل البئر قطع الصخور المحفورة او المنسلخة من على جدار البئر. والتي بالامكان بقائها على شكل قطع صخور او رمل او بالامكان ان تتما او تتشتت داخل السائل مودية الى زيادة لزوجتة. ان عزل الاجزاء الصلبة الغير مرغوب بها تتم عادة بوسائل ميكانيكية مثل الغرابيل الهزازة (shale shakers) عازلات سايكلون (cyclone separators) النابذات المركزية(centrifuges)  وغيرها وفيما يلي عمل كل منها : الغرابيل الاهتزازية (The Shale Shakers)  يمر سائل الحفر العائد من البئر الى السطح على الغربال(الغرابيل) الهزازة ان تعزل قطع الصخور المحفورة عن السائل. يتكون الغربال الهزاز من غرابيل دوارة او اهتزازية…

  • Drilling

    Drilling Fluid Definitions and General Functions

      Drilling Fluid Definitions and General Functions Results of research has shown that penetration rate and its response to weight on Drilling Bit and rotary speed is highly dependent on the hydraulic horsepower reaching the formation at the bit. Because the drilling fluid flow rate sets the system pressure losses and these pressure losses set the hydraulic horsepower across the bit, it can be concluded that the drilling fluid is as important in determining drilling costs as all other “controllable” variables combined. Considering these factors, an optimum drilling fluid is properly formulated so that the flow rate necessary to clean the hole results in the proper hydraulic horsepower to clean…