Baker Hughes INTEQ, Baker Oil Tool,. Hughes . Baker Hughes Drilling Fluids division, many special chemicals and deals especially with the products of the INTEQ Division. .. time-consuming manual work are relatively expensive. Baker Hughes INTEQ Drilling Engineering Workbook A Distributed Learning B / December Drilling Fluids Workbook H Rev. .. and paragraph references and the following information is included in your transmittal. Department Drilling Engineering Workbook P/N H Manual Date. Geothermal drilling fluids commonly used include water based mud, water only .. dependent on temperature (Baker Hughes INTEQ, ). Drilling fluid.

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The invention will be further illustrated with respect to the following examples, which are only meant to further illuminate the invention, and not limit it in any way. Rheological agents and thickeners. The piston on the low pressure side is filled with liquid, and blocked, so an increase in liquid pressure is measured rather than manua.

In a more preferred embodiment, the proportions range from about 1 to 8 vol. Fluuds on drilling fluids Documents. EXP Oleamidopropyl betaine surfactant. The mixture was hot rolled overnight.

Baker Hughes INTEQ: Drilling Engineering Workbook

The following components were then added, again given in gram proportions drillinf a single barrel and 7 barrels, respectively: Because latex polymers contain deformable colloidal particles, it can provide an excellent bridging and sealing ability to reduce the permeability of the formation where the lost circulation of drilling mznual may encountered. Still another object of the invention is to provide a composition and method that increase the pressure blockage, reliability, magnitude, and pore size that can be blocked with water-based fluids for stabilizing shale formations.

Observe the fluid for flocculation and separation. Inside these cracks the clay surface area to filtrate volume ratio is very large resulting xrilling heavy EXP precipitation. Additional evaluations were performed only for those samples having passed the above screening test. Next Patent Methods, cement comp When subjected to differential hydraulic pressure, these ultra-fine particles do not shear or break, but deform and penetrate the hairline fractures and to form an impermeable seal.

In applications of drilling in depleted huvhes, there is often no need of a precipitating agent. If added to mud formulations earlier, they tend to be unstable and precipitate prematurely. Brine-based drilling fluids, of course are a water-based mud in which the aqueous component is brine.


Standard procedure is to circulate the mud about 7 hours followed by static exposure overnight. The polymer latex preferably is capable of providing a deformable latex film or seal on at least a portion of a subterranean formation. When mud or liquid invades the shale, the pressure in the pores rises and the pressure differential between the mud column and the shale falls. The essential components of the water-based drilling fluids of this invention are the polymer latex and water, which makes up the bulk of the fluid.

Duse of the sodium aluminate and salt only comparative Ex. However, circulation was maintained 5 hours instead of one as before. Latex Stability As noted above, initial experiments indicated that some latex products emulsion polymers produced synergistic effects with an aluminum complex, resulting in improved pore pressure transmission characteristics of the fluids. The first of these polymers was tested on the PPT test in a fluid with other products.

The proportion of the polymer latex in the drilling mud, based on the total amount of the fluid may range from about 0. Methods of sealing subterranean zones. The core is held between the two pistons. A precipitating agent such as a silicate or an aluminum complex e.

In carrying out these and other objects of the invention; there is provided, in one form, a water-based drilling fluid including water and a polymer latex capable of providing a deformable latex film or seal on at least a portion of a subterranean formation. The initial formation pressure decrease demonstrated that the formulation of the invention inhibited pressure penetration.

Suitable wetting surfactants include, but are not limited to, betaines, alkali metal alkylene acetates, sultaines, ether carboxylates, and mixtures thereof. These tests use a core 25 mm in diameter and 25 mm long. Reducing drilling fluid pressure invasion into the wall of a borehole is one of the most important factors in maintaining wellbore stability.

baker hughes inteq drilling fluids reference manual – Tài liệu text

In fact the term under-balanced drilling Documents. The pressure in each accumulator is controlled with a manual regulator fed by a psi 15, kPa nitrogen bottle.

Oil base drilling fluid composition. Aluminum Complex Although a synergistic effect of ALPLEX with latex on stabilizing shales was confirmed by PPT test results, this system is fragile and very sensitive to increasing salt concentration and temperature. Borehole drilling fluid and method. Observe sieve for amount of retained latex particles.


A synergistic effect between latex and aluminum complex has also been observed in these tests. Further experimental evidence indicates that some latex products exhibit a synergistic effect with aluminum complexes that results in improved pore pressure flukds characteristics. Inhibiting drilling fluid pressure invasion into the wall of a borehole is one of the most important factors in maintaining wellbore stability.

The large surface of the particles is thermodynamically unstable and any perturbation affecting the balancing forces stabilizing the polymer dispersion results in a change in the bzker of particle agglomeration. Methods of displacing liquids through pipes.

The small sample dispersion unit and the standard refractive index 50HD Particle R. LD8 was added to control foaming. Secondly, latex co-precipitation with precipitating agents, if present, such as aluminum complexes, produces a semi-permeable membrane on shale surfaces drillnig chemically improves the osmotic efficiency between the fluid and the borehole. This can also reduce costs in some applications.

Water-based drilling fluids using latex additives – Baker Hughes Incorporated

Ch6 – Drilling Fluids Documents. The method of claim 9, where the salt is selected from the group consisting of calcium chloride, sodium chloride, potassium chloride, magnesium chloride, calcium bromide, sodium bromide, potassium bromide, calcium nitrate, sodium formate, potassium formate, cesium formate, and mixtures thereof.

During the mixing period it may be necessary to add about 5 drops defoamer LD-8 if foaming is observed. Effect of Latex in Mud Properties The previous results and discussions deal with latex stability in drilling fluids and its synergy with aluminum complex in improving mud inhabitability to shale formations. The circumference of the shale and pistons are sealed with a rubber sleeve.

As the volume and velocity of filtration flow into these cracks is very small, filtration alone cannot account for fludis latex accumulation at the crack throat.

Circulation of the fluid was found to be an important element of the latex plugging mechanism.