PRE AND POST DRILLING

Pre-drilling:

 The pre-drilling process include things such as geological surveys.  This is so that formations and landforms are able to be detected, i.e. the aim is to determine the project site map, location of the site, and also to determine the GPS and depth.

The permit is to determine the drilling site must be within the Public Works Jurisdiction. It also includes Provisions of Well Specifications , Property Owner Information and Information must be provided. Once the land that of interest is found, permitting is an important part of the process based on legality alone. These permits are per state and companies must file for approval. 

The site planning allows to calculate the bill of quantity for the recommended depth. Along with site planning, is to plan out the well parameters and boundaries. This process allows risks to be analyzed, economics to be kept reasonable, and high efficiency to be maintained.

Drilling:

This stage involves the equipment that will be used after the pre-drilling has been analyzed such as drill rigs. A drilling rig is a machine that creates holes in the earths subsurface. Drilling rigs can be massive structures housing equipment used to drill water wells, oil wells, or natural gas extraction wells, or they can be small enough to be moved manually by one person and such are called augers.  

   

Post-drilling:

The post-drilling also helps in determining the actual depth of the aquifer which is the layer of permeable rocks and a water bearing formation. The purpose of post drilling is to confirm that the job is satisfactory. Post drilling also determines the pump test,The goal of a pumping test, as in any aquifer test, is to estimate hydraulic properties of an aquifer system, one also uses pumping tests to estimate the properties of aquitards.

Logging

It also enables us to obtain a continuous record of a formation's rock properties. Wire line logging can be defined as being "The acquisition and analysis of geophysical data performed as a function of well bore depth, together with the provision of related services. Which is refer to   as logging. 

 

Down Hole Camera

The use of down hole camera system for general inspection of the casing and well screen as being part of the post drilling process.

 A borehole camera also permits viewing of well bore features that otherwise may be unknown to exist, such as the conditions of the well bore, casing, and pumping system, historic water levels indicated by staining or corrosion, presence or absence of bacterial growths, existence of other organisms, the presence of foreign objects, and influx of gases.

 




1 Comments:
  • Muller
    Mar 02, 2020

    Drilling on a hilly or flat surface to find petrochemicals or other construction works require enormous endeavor. I am a small DIY enthusiast and only to small drilling work for my garden or other household kinds of stuff. Reading about this kind of megaproject only give me the courage to stick to my daily work. Thank you.


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