sand control

Sand Control

2017-11-09 AONG manager 0

  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 [..More]

well completion

Well Completion Concepts

2017-10-13 AONG manager 0

      Porosity Porosity is the fraction of the total volume of the rock that is pore (non rock) space or void and not made of solid pieces of the formation. It will be filled with a gas, water [..More]


Water-Base Muds

2017-08-07 AONG manager 0

    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 [..More]


Oil Well Casing

2017-08-04 AONG manager 0

    Types of Casing  Based on the primary function of the casing string, there are five types of casing to be distinguished. Stove or Surface Casing The stovepipe is usually driven to sufficient depth (15–60 ft) to protect loose [..More]


Fishing Equipment

2017-06-30 AONG manager 0

Fishing Operations and Equipment A fish is a part of the drill string that separates from the upper remaining portion of the drill string while the drill string is in the well. This can result from the drill string failing [..More]

Well Control

2017-06-29 AONG manager 0

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 [..More]


Wells – Chemicals

2017-04-07 AONG manager 0

Chemicals Used in Fracturing The identities of chemicals incorporated in fracturing fluids were probably the first thing sensationalized about fracturing. The movie “Gasland” created quite a stir with the statement that a “cocktail” of several hundred toxic chemicals were “potentially” [..More]

Drilling Rotating Equipment

Drilling Rotating Equipment

2017-03-11 AONG manager 0

    Rotating system: the figure indicate the comparative sizes of the drill pipe and drill collar. Swivel ♦ The swivel hangs from the drilling hook by means of large bail, or handle. The swivel is not rotate, but allow [..More]


Oil-Base and Synthetic-Base Muds

2017-03-05 AONG manager 0

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 [..More]


Testing of Drilling Systems

2017-02-18 AONG manager 0

    To properly control the hole cleaning, suspension, and filtration properties of a drilling fluid, testing of the fluid properties is done on a daily basis. Most tests are conducted at the rig site, and procedures are set forth in the API [..More]