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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After 6 days, the pH was Accordingly, the specification is to be regarded in an illustrative rather than a srilling sense. Optimizing high performance water base mud design is commonly at the forefront of many drilling fluid service and oil operating companies’ needs due to the various limitations of invert emulsion fluids.

If added to mud formulations earlier, they tend to be unstable and precipitate prematurely. Observe the fluid for flocculation and separation.

The drilling fluid is expected to carry cuttings up from beneath the bit, transport them up the annulus, and allow their separation at the surface while at the same time the rotary bit is cooled and cleaned. Inside these cracks the clay surface area to filtrate volume ratio is very large resulting in heavy EXP precipitation.

When sufficient latex is deposited to bridge the crack opening, the fracture is sealed and differential pressure is established across the latex. This static period eliminates pressure drift due to temperature effects by allowing temperature variation from circulation to equilibrium.

Likewise, the invasion of water into the shale matrix increases hydration or wetting of the partially dehydrated shale body causing it to soften and to lose its structural strength.

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

If a salt is employed, it is often helpful to additionally employ a surfactant, such as a huhes, for example. It would be desirable to be able to reduce the loss of drilling innteq into depleted sands. 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.


There is always a need for a better composition and method to stabilize the shale formations. It is recognized that sufficient iteq pressure will stabilize shales to maintain the integrity of the borehole.

In the foregoing specification, the invention has been described with reference to specific embodiments thereof, and has been demonstrated as effective in providing a water-based drilling fluid that can effectively reduce the rate of drilling fluid pressure invasion of the borehole wall.

Low tox, oil based, spot fld. Without latex polymer, the fluid loss of this mud is out of control. The essential components of the water-based drilling fluids of this invention are the polymer latex and refereence, which makes up the bulk of the fluid. Formation Pressure Time, hours: Solids, oil and water content The method of claim 18 where the borehole wall comprises depleted sands and shale, and where the drilling fluid stabilizes the shale and reduces drilling fluid loss.

Another optional component is precipitating agent. 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.

These tests use a core 25 mm in diameter and 25 mm long. Since the development of pore pressure transmission PPT testing, the effects of various chemical additives on pore pressure transmission rates have been evaluated. Next Patent Methods, cement comp Four or five hours without circulation elapses before the test is started in the morning.

With circulation, however, the latex accumulated on the surface and formed a plugging film. The following components were then added, again given in gram proportions for a single barrel and 7 barrels, respectively: The salt and polymers were then added.

Published on Jan View 70 Download 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.

baker hughes inteq drilling fluids reference manual

Drillung water-based drilling fluid having a polymer latex capable of providing a deformable latex film on at least a portion of a subterranean formation has been discovered to provide reduced drilling fluid pressure invasion when used to drill in shale formations for hydrocarbon recovery operations.


In this test, circulation was restarted after the pressure rose to 60 psi kPa in 70 hours FIG.

This additional water compresses the water inside the piston causing the pressure to rise. With a few hours of continued circulation after the greater pressure differential was established, the seal was more stable. A method of inhibiting borehole wall invasion when drilling with a water-based drilling fluid in a subterranean formation to reduce drilling fluid flulds while drilling in depleted sands, the method comprising: EXP Oleamidopropyl betaine surfactant. When hguhes test started the formation pressure fell from 50 psi kPa to zero, increasing the differential pressure from to psi 1, to 2, kPaas seen in FIG.

LD8 was added to control foaming. All products meet the requirement for fluid disposal in the Gulf of Mexico 30, ppm and become less toxic after solids contamination.

Drilling of displacing liquids through pipes. Duse of the sodium aluminate and salt only comparative Ex. 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 kinetics of particle agglomeration.

Inhibiting drilling fluid pressure invasion into the wall of a borehole is one of the most important factors in maintaining wellbore stability. The method of claim 8 where in providing the water-based drilling fluid, the polymer latex comprises particles that average less than 1 micron in size. Reducing drilling fluid pressure invasion into the wall of a borehole is one of manjal most important factors in maintaining wellbore stability.

During the fljids period it may be necessary to add about 5 drops defoamer LD-8 if foaming is observed. The first of these polymers was tested on the PPT test in a fluid with other products. Oil base drilling fluid composition. All pressures are monitored with Heise transducers. A combination of a mankal formulation approach as well as modification to the PPT test procedure was hughess to demonstrate the efficacy of an alternative approach to enhance the performance of water-based mud systems.