GeoSelim

The Biggest Mistakes Made by Geotechnical Drilling Companies in Saudi Arabia The recession in Saudi Arabia affecting all type of business. Oil price dropped and the country entered the Yemen war. Small geotechnical drilling companies made some mistakes to survive the current recession. Some of small companies did not  survive  and they closed/sold their business. below are the biggest mistakes:

Here again we are drilling in Al-Namas , Saudi Arabia for geotechnical purpose and I am musing on samples for geologic purpose. Namas is a small town on the Arabian Shield . I still do not figure out the best catchy title for this blog series,

GSP #1 core sample in Afif, KSA. Geologic sample photo or "GSP" as abbreviation, it will be my new blog series which I'll publishing my photos of samples we're encountering by core drilling. I aim to start an open discussion about each samples

Our funny crew showing broken carbide bit after a troubles while drilling in a hard dolomite in North Sinai, Egypt in a mission to reach the Nubian aquifer. http://youtu.be/KhTy0UoVa40 Drilling on earth have a lot of problem, I wonder what kind of machines and equipment we need to drill on the Mars in case of exploring for groundwater? :) http://youtu.be/6sk5IuIjr1E

Lost Circulation is one of the major drilling problem geologists and drilling engineer’s struggling it while drilling a well for both oil/gas and groundwater. If a very porous, cavernous or highly fractured zone is encountered while drilling; an excessive amount of drilling mud is lost to that zone during lost circulation. The zone is called a thief or lost circulation zone. In this case I’ll explain dilemma I faced while drilling groundwater well in North Sinai, Egypt we expecting the aquifer at 1200m. Within drilling community North Sinai distinguishing by repetitive Lost Circulation. I joking with my colleagues we need to invent (Lost Circulation Preventer) instead of (Plow out Preventer). That lead me to design Excell worksheet to make cement job calculation easy work , because I think every repetitive work should has a system to make it done. The following table is the important data about lost circulation zones: Depth(m) Lithology/comment From to 372 404 Dolomite, ...

I worked for an Employer in North Sinai, Egypt as a Mud logger and well site geologist. North Sinai is distinguished by loss of circulation because of the large calcareous section (fractured limestone and