February 2010 Blog Posts (4)

What factors must be considered when designing a casing/tubing string?

Casing and tubing selection are one of the critical tasks for constructing each wellbore to meet the wellbore objective. There are several selection criteria for casing/tubing string design.

The factors must be contemplated when designing a casing and/or tubing string as listed below;

•… Continue

Added by Rachain Jetjongjit on February 22, 2010 at 2:30pm — 6 Comments

What is slug mud? How much volume and weight of slug mud should be?

Slug Mud: It is heavy mud which is used to push lighter mud weight down before pulling drill pipe out of hole. Slug is used when pipe became wet while pulling out of hole.

Normally, 1.5 to 2 PPG over current mud weight is a rule of thumb to decide how much weight of slug should be. For example, current mud weight is 10 PPG. Slug weight should be about 11.5 to 12 PPG.…

Continue

Added by Rachain Jetjongjit on February 19, 2010 at 6:30am — 6 Comments

Functions of Drilling Fluid

You may not know that drilling fluid or mud has several important functions helping us achieve goal to drill well. I would like to share about the functions of drilling fluid as follows;

drilling mud

1. Transport cutting and dispose to surface - The drilling fluid brings the drilled material to the ground surface either by mud rheology and… Continue

Added by Rachain Jetjongjit on February 16, 2010 at 11:00am — No Comments

What are the differences between steering (orienting or sliding) and rotating?

Steering (orienting or sliding) is drilling with mud downhole steerable mud motor. Drilling with the steerable motor does not rotate drill pipe because it uses hydraulic power to drive down hole motor and bit. Steering is used in order to control well direction.

Rotating is drilling with Topdrive or rotary table and… Continue

Added by Rachain Jetjongjit on February 13, 2010 at 11:00am — No Comments

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AREA	LAST COUNT DATE	COUNT	CHANGE FROM PRIOR COUNT	DATE OF PRIOR COUNT	CHANGE FROM LAST YEAR	DATE OF LAST YEARS COUNT
UNITED STATES	5/17/13	1769	+0	5/10/13	-217	5/18/12
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USA OFFSHORE	5/17/13	52	+2	5/10/13	+5	5/18/12
INTERNATIONAL	04/2013	1301	+33	3/2013	+123	4/2012

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