MXPA05012055A - An improved non-metallic thread sealant and anti-seize compound - Google Patents

Abstract

An anti-seize compound is disclosed for use on surfaces of threaded connections made of speciality alloys such as high nickel or chrome ferrous alloys or other speciality alloys prone to galling under high stress conditions. The compound using a metal fluoride as the anti-seize film forming agent at least above about 5wt%.

Description

NON-METRIC THREADED SEALANT IMPROVED AND COMPOSED AGAINST CAPTURE BACKGROUND OF THE INVENTION 1"Field of the Invention The present invention relates to non-metallic thread sealant and anti-capture compound for use in ferrous alloys containing high nickel or chromium or other metal alloys prone to galling under high contact stress. More particularly, the present invention relates to a non-metallic, counter-capture threaded compound for use in ferrous alloys containing high nickel or chromium. other metal alloys prone to galling under high contact stress including one or more thixotropic or reophetic base materials one or more counter-capture agents, and one or more limit lubricants. 2. Description of the Related Branch Threaded chromium and / or high nickel alloy connections for applications that incur high contact stress such as special oil field pipe and housing and MWD tools (supervision while drilling) have been found to work adversely in the presence of a high concentration of graphite and PTFE fillers. The natural graphite materials? Synthetic and even fiber results in a higher propensity for galling under high rotational load such as in threaded connections, unless a high percentage by weight of mild metal additives is present, such as lead, zinc and copper (reference compound). API 5A3). Compounds against capture from the above branch are described in U.S. Patent Nos .: 5,093,015; 5,536,422; 3,652,414; and 3,652,415. Thus, there is a need for a sealing and / or counter-capture compound with improved sealing and counter-capture properties for threaded connections made of alloys prone to galling under high contact stress having percentages of less than about 10% by volume. Graffiti type materials or other fibrous organic materials such as PTFE. SUMMARY OF THE INVENTION The present invention provides a counter-capture thread composition that includes one or more thixotropic base materials, one or more limit lubricants, and one or more anti-capture agents. The anti-capture compound of the present invention preferably includes an anti-wear additive and / or other additive systems. The anti-capture agents form a film against capture on the surfaces of the threaded connections made of specialty alloys having sufficient film strength to protect the surfaces of galling under high stress. The present invention also provides a thread lock / seal composition that includes one or more thixotropic base materials, one or more boundary lubricants, and one or more metal fluorides of capture metal, in particles. The anti-capture compound of the present invention preferably also includes a wear additive and / or other additive systems. The present invention also provides a thread lock / seal composition that includes one or more thixotropic base materials, one or more limit lubricants, one or more metal fluorides, particulate, counter capture, and wear additive system and an additive system against degrading. The present invention also provides a thread-catching / sealing compound that includes one or more thixotropic base materials, one or more limit lubricants, one or more metal fluorides against capture, particulate, an anti-wear additive system, and additive versus degrade system, wherein the metal fluorides are selected from the group consisting of lithium fluoride (LiF), sodium fluoride (NaF), potassium fluoride (KF), rubidium fluoride (RbF), fluoride cesium (CsF), magnesium fluoride (MgF2), calcium fluoride CaF2), strontium fluoride (SrF2), yttrium fluoride (YF3), lanthanum fluoride (LaF3), cerium fluoride CeF3), neodymium fluoride (NdF3), europium fluoride (EuF3), dysprosium fluoride (DyF3), or mixtures or combinations thereof. Preferred non-corrosive metal fluorides include sodium fluoride (NaF), potassium fluoride (KF), rubidium fluoride (RbF), cesium fluoride (CsF). magnesium fluoride (MgF2), calcium fluoride (CaF2), cerium fluoride (CeF3) or mixtures or combinations thereof. The present invention also provides a thread lock / seal composition that includes one or more thixotropic base materials, one or more limit lubricants, one or more metal fluorides against capture, particulate, an anti-wear additive system and a anti-degrading additive, wherein the metal fluorides are selected from the group consisting of lithium fluoride (LiF), sodium fluoride (NaF), potassium fluoride (KF), rubidium fluoride (RbF), fluoride cesium (CsF), magnesium fluoride (MgF), calcium fluoride (CaF2), strontium fluoride (SrF2), yttrium fluoride (YF3), lanthanum fluoride (LaF3), cerium fluoride (CeF3). Neodymium fluoride (NdF3), europium fluoride (EuF3), dysprosium fluoride (DyF3), or mixtures or combinations thereof. Preferred non-corrosive metal fluorides include sodium fluoride (NaF), potassium fluoride (KF), rubidium fluoride (RbF), cesium fluoride (CsF), magnesium fluoride (MgF2), calcium fluoride (CaF2), cerium fluoride (CeF3 and mixtures or combinations thereof, and wherein the limit lubricants are selected from the group consisting of metal borates, metal olibdates, metal carbonates, metal acetates, and mixtures or combinations of The present invention also provides a thread lock / seal composition that includes one or more thixotropic base materials, one or more limit lubricants, one or more metal fluorides, particulate against capture, an additive against wear and an an i-degrading additive system, wherein the thixotropic base material comprises a fluid thickened by a suspending agent and wherein the metal fluorides are selected from the group consisting of n Lithium fluoride (LiF), sodium fluoride (NaF), potassium fluoride (KF), calcium fluoride (CaF2), strontium fluoride (SrF2), yttrium fluoride (YF3), lanthanum fluoride (La F3) cerium fluoride CeF3), neodymium fluoride (NdF3), europium fluoride (EuF3), dysprosium fluoride (DyF3, or mixtures or combinations thereof).

Preferred non-corrosive metal fluorides include sodium fluoride (NaF), potassium fluoride (KF), rubidium fluoride (RbF), cesium fluoride CsF} , magnesium fluoride (MgF2), calcium fluoride (CaF), cerium fluoride (CeF3) and mixtures or combinations thereof, and wherein the limit lubricants are selected from the group consisting of graphite materials, polymers that contain fluorine, natural or synthetic fibers, MoS2, and mixture or combinations thereof and wherein the thixotropic base material selected from the group consisting of a lithium complex grease, an aluminum complex fat, a calcium complex and mixtures or combinations thereof, and other additives selected from the group consisting of graphite, PTFE, fibers, MoS2, and mixtures or combinations of the same, The present invention also provides a method for preparing the composition against thread capture which includes the steps of dispersing in a thixotropic base material a counter-capture system, a boundary lubrication system, optionally a friction adjustment system optionally an anti-wear system and optionally an anti-degrading system. The present invention also provides a method for using a thread capture composition of this invention that includes the steps of applying an amount of a counter-capture composition of this invention to surfaces of an alloy threaded connection, prior to the formation of the connection. , sufficient to form a protection film against capture on the surface of the threaded alloy connection, wherein the film protects the threaded alloy connection from galling, scratching and / or catching during the formation and breakage of the alloy connections. do or match to specified requirements. After application of the composition to the surfaces of the threaded alloy connection, the threaded alloy connection is formed. The method may also include the steps of applying composition against additional capture to the surfaces of the threaded alloy connection after each break, or prior to the next formation. DETAILED DESCRIPTION OF THE INVENTION The inventors have found that a compound and composition for sealing and against non-metallic thread capture for use in ferrous alloys containing high nickel or chromium or other metal alloys prone to galling under high contact stress may be formulated. The composition of this invention broadly includes a thixotropic or reopéctic base material such as a metal salt complex grease, an anti-metal fluoride capture agent, a boundary lubricant such as calcium salts such as borates, molybdates, carbonates , acetates, stearate, etc. The composition may also include minor amounts of graphite, olibdene disulfide, polymer fibers, and PTFE materials to provide controlled friction properties and improve seal capacity when required in specific thread-shaped designs. The composition may also include polymers to improve adhesion, resistance to rust and corrosion and antioxidants. The composition may also include organic additives of extreme pressure and wear, but such additives may reduce the protection against galling if not appropriately selected and used at relatively low amounts, generally less than about 15% by weight. The new compound is particularly well suited for use in oil, mining or water well drilling operations or in industrial applications where specialty alloys such as ferrous alloys raised in nickel and chromium or other metal alloys prone to low galling High contact effort are used. Suitable anti-capture agents include, without limitation, metal fluorides or mixtures of non-metal fluorides. Examples of metal fluorides include lithium fluoride (LiF), sodium fluoride (NaF), potassium fluoride (KF), rubidium fluoride (RbF), cesium fluoride (CsF), magnesium fluoride (MgF2), calcium fluoride (CaF2), strontium fluoride (SrF2), yttrium fluoride (YF3) lanthanum fluoride (LaF3), cerium fluoride (CeF3), neodymium fluoride (NdF3), europium fluoride (EuF3), dysprosium fluoride (DyF3), or mixtures or combinations thereof. Preferred metal fluorides include sodium fluoride (NaF), potassium fluoride (KF), rubidium fluoride (RbF), cesium fluoride (CsF) f Magnesium fluoride (MgF2), calcium fluoride (CaF2), cerium fluoride (CeF3), or mixtures or combinations thereof. Particularly preferred metal fluorides include sodium fluoride (NaF), potassium fluoride (KF), rubidium fluoride (RbF), cesium fluoride (CsF), calcium fluoride (CaF2), cerium fluoride (CeF3) or mixtures or combinations thereof. Especially preferred non-corrosive metal fluorides include magnesium fluoride (MgF2), calcium fluoride (CaF2), cerium fluoride (CeF3) or mixtures or combinations thereof. The most preferred metal fluoride is calcium fluoride (CaF2). Of course, it must be recognized that the meaning of non-metallic is directed to the fact that the counter-capture composition contains zero valent metals, ie, metals in their pure metallic state. The thixotropic base material useful in the compounds of the present invention include any material that can be used to uniformly suspend the other components of the thread compounds of the present invention and the exact nature of the thixotropic base material is not considered to be critical to the properties of film formation and counter capture of the present thread compounds. Suitable thixotropic base materials of the present invention comprise one or more fluids and one or more thickening agents such as a lithium complex, an aluminum complex and / or a calcium complex. The examples provided that indicate fat also include the practice of using a fat concentrate with additional added oil to achieve a desired consistency. Suitable fluids include, without limitation, synthetic (man-made) fluids, petroleum-based fluids (crude oil derivatives through refining), natural fluids, and mixtures thereof. Preferred fluids for use in the screw compounds of the present invention have viscosities ranging from about 5 to about 600 centistok.es at 40 ° C. Preferred fluids include, without limitation, polyalphaolefins, polybutenes, polyester polyols, vegetable oils, animal oils, other essential oils, and mixtures thereof. Suitable polyalphaolefins (PAOs) include, without limitation, polyethylenes, polypropylenes, polybutenes, polypentenes, polyhexenes, polyheptenes, higher PAOs, copolymers thereof, and mixtures thereof. Preferred PAOs include PAOs sold by ExxonMobil Chemical Company as fluids SHF and PAOs sold by BP-Amoco Chemical under the name Durasyn. These fluids include those specified as ETYHLFLO 162, 164, 166, 168, 170, 174, and 180. Particularly preferred PAOs include mixtures of about 56% Durasyn 174 and about 44% Durasyn 168. Preferred polybutenes include, without limitation , those sold by BP Amoco Chemical Company and ExxonMobil Chemical Company under the trade names INDOPOL and PARASOL, respectively. Particularly preferred polybutenes include INDOPOL 100 from BP Amoco. Preferred polyesters include, without limitation neopentyl glycols, trimethylolpropanes pentaerythritols, dipentaerythrifols, and diesters such as dioctylsebacate (DOS), diacetylzelate (DOZ), and dioacyl dipterate.

Preferred petroleum-based fluids include, without limitation, white mineral oils, paraffinic oils, and naffenic oils of medium viscosity index (MVI) having viscosities ranging from about 5 to about 600 centistokes at 40 ° C. Preferred white mineral oils include those sold by Crompton Chemical Corporation, Citgo, Lyondell Chemical Company, PSI, and Penreco. Preferred paraffinic oils include neutral solvent oils available from ExxonMobil Chemical Company, high viscosity index (HVI) neutral oils available from Shell Chemical Company, and solvent-treated neutral oils available from Arco Chemical Company. Preferred MVI naphthenic oils include solvent-extracted coastal pale oils available from ExxonMobil Chemical Company and Ergon, oils extracted / treated with MVI acid available from Shell Chemical Company, and naphthenic oils sold under the names HydroCal and Calsol by Calumet. The newer Group 2 and Group 3 oils can also be used in the compositions of this invention. Preferred vegetable oils include, without limitation, castor oil, corn oil, olive oil, sunflower oil, sesame oil, peanut oil, other vegetable oils, modified vegetable oils such as cross-linked castor oil and the like, and mixtures thereof. Preferred animal oils include, without limitation, tallow, mink oil, fat, other animal oils, and mixtures thereof. Other essential oils will work well too. Of course, all the oils identified above can also be used. Suitable suspending agents include, without limitation, suspending agents conventionally used in paints and thread compound such as silica, clay, organic thickeners, or mixtures thereof. Suitable organic thickeners may include, without limitation, metal or mineral soaps or complex soaps, polyurethanes, other polymers, and mixtures thereof. Preferred soaps or soap complexes include aluminum-stearate benzoate complexes, alurninium-behenate-arachidonate benzoate complexes, complete lithium-stearate azelate complexes, lithium-stearate or behenate sebacate complexes, lithium adipate complexes- stearate, calcium-stearate acetate complexes, calcium sulfonate-sterarate complexes, but other mineral soaps or complex soaps of aluminum, calcium, lithium or other and mixtures thereof can be used equally well. Preferred thixotropic organic thickener base materials include, without limitation, one or more hydrocarbon fluids thickened with mineral or metallic soap or soap complex. Fatty complexes of aluminum, calcium, lithium or mixtures thereof are particularly preferred since they generally have high melting points and excellent water resistance. Generally, thixotropic organic thickener base materials comprise from about 2% by weight to about 15% by weight of one or more soap and / or soap complexes and from about 98% by weight to about 85% by weight of one or more oils as described below. The preferred requirement for the thixotropic base material is that the material has a sufficient viscosity to provide a final base oil viscosity in the range of about 20 to about 250 centistokes at 40 ° C. Of course, the final composition viscosity for the thixotropic base will depend on the amount of the base used in the formulation, the viscosity of the other ingredients, and the thickening tendencies of the solid materials. However, in general, because the thixotropic base comprises the majority of the composition, the viscosity will be more or less controlled by the viscosity of the thixotropic base material. Water resistance is particularly important in oil field, mining or water well drilling operations. The hydrocarbon fluids thickened by aluminum complex and calcium sulfonate complex are particularly preferred since they generally have a high melting point, wet metal adhesion, superior water resistance and can be formulated to conform to food grade requirements as well. which are classified as non-hazardous. Suitable limit lubricants for use in the present invention include, without limitation, graphites, graffiti-type materials, calcium compounds such as borates, carbonates, sulfates, acetates, etc., other non-abrasive mineral compounds such as silicates, other acetates of metal, other metal carbonates, other metal sulfates, etc., or mixtures thereof. Finely divided fibers suitable for use in the present invention include, without limitation synthetic polymer fibers, non-abrasive mineral fibers, natural fibers and mixtures thereof. Suitable synthetic polymer fibers include, without limitation; polyamides such as nylon, kevlar1 *, aramid and the like; polides; polyesters such as PET and the like, polycarbonates, phenolics, carbon and carbonaceous, and the like and mixtures thereof. Suitable natural fibers include cellulose such as cotton and the like, modified cellulose and the like and mixtures thereof. Suitable mineral fibers include, without limitation, silicone mineral fibers and the like. It is thought that the fibers are entangled under shear stress to produce a limit lubricant retention film on the surface of the threaded connections. This film is thought to result in a thread compound with improved abrasion and capture resistance. The present invention may preferably also include other conventional additives such as rust inhibitors, antioxidants and corrosion inhibitors. These additional additives can be mixed into the thixotropic base material before the compound is prepared or added during the preparation of the compound. These additives are added to the thixotropic base materials or to the final compositions using mixing procedures well known in the art. The composition of this invention generally forms a film against capture on the surface of connections, such as threaded connections, the films usually must be thick enough to provide adequate properties against galling. against scratches and against capture connections of specialty alloys; however, not so thick as to interfere with the conventional operation of the connections, that is, to interfere with the formation and rupture of the connections. Preferably, the film thickness is between about 0.0002564 cm to about 0.00508 cm (about 0.0001 inches to about 0.002 inches), and particularly between about 0.00127 cm to about 0.00508 cm (about 0.0005 inches to about 0.002 inches), and more particularly, between about 0.00254 cm to about 0.00381 cm (about 0.001 inches to about 0.0015 inches). The anti-capture composition of the present invention can be prepared by mixing the ingredients together using mixing procedures well known in the art. The components must be mixed in a substantially homogeneous manner to provide optimum film integrity. For smaller quantities, mixing can occur in a container or drum. For large amounts, the composition can be mixed by combining the components in a large container mixer and then mixing them together to produce a substantially homogeneous mixture. The compositions of this invention may include the ingredients, their corresponding quantity scales and example ingredients, not inclusive, are listed in the table below. TABLE 1 Formulation index Ingredient Subingredients Quantity Examples (% weight) Material of around 40 base greases around 90 thixotropic salt complex of fatty metal from around complex fat of 50 to around metal complex of 90 lithium, aluminum complex grease, - calcium complex oil base oil around oils of 98 to about 85 oils, synthetic oils, natural oils, metal salts around lithium, oxide, espe.samie. n-2 about hydroxide, carbonate, sulfonate, etc .; oxide, hydroxide, carbonate, aluminum sulfonate, etc .; oxide, hydroxide, carbonate, calcium sulfonate, etc. agents against fluorides around LiF, NaF, KF, captures metal 5 around RbFf CsFf MgF2 dor of 50 CaF2, SrF2, YF3, LaF3, CeF3, NdF3 EuF3, DyF3. or mixtures thereof salts lubricant around borates, olib-metal limit 5 to around, carbonator of 40 coughs, acetates, metal stearates, etc. polymer adjusters, up to around dust, powder and fiber content of 12 grams of graphite fibers, natural or synthetic fibers, molybdenum disulfide, etc. additives with up to 5% sulfurized sulfurized solvent, phosphate esters, dithiocarbamates, dithiophosphates. naphtha- nates or the like additives antihasta around antioxidant deters 2 and antiozonants additives depends on the adhesives, specialty H2S inhibitor formulation, dyes or pigments The present thread compounds can preferably include from about 405 to about 80% by weight of a thixotropic base material, from about 5% to about 40% by weight of one or more limit lubricants and from about 5% to about 50% by weight of one or more metal fluorides. Additionally, the thread compounds of the present invention can include up to about 12% by weight of a wear additive system and up to about 5% by weight of an anti-degradation system. The anti-degrading system may include an antioxidant, a rust inhibitor, and / or a corrosion inhibitor. More particularly, the present screw compounds can include from about 50% to about 80% by weight of a thixotropic base material, from about 10% to about 305% by weight of one or more limit lubricants, and from about 5% by weight. % to about 40% by weight of one or more metal fluorides. Again, the present invention can include up to about 10% by weight an anti-wear additive system and up to about 4% by weight of an anti-degradation system. If finely divided fiber, non-metallic, which is generally available in a pulp form, are included in the compositions of this invention, so it is important to ensure that the fibers are properly dispersed in the composite. The need for adequate dispersion of the fiber usually requires that the fiber be pre-mixed into the thixotropic base material. In this way, the fiber is first broken by hand into small lumps and then mixed into the thixotropic base material in the pre-mixing step. * When mixing is done in a conventional vertical mixer, about 4% by weight of fiber is mixture with 96% by weight of the thixotropic base material. Mixing is performed as a moderate mixing speed of about 45 rpm with half the thixotropic base for about 15 minutes and then at a high speed, usually at the highest practical speed of the mixer, for at least another 15 minutes. Pre-mixing is then tested for fiber dispersion. If visible lumps are not visible, then the remaining half of the thixotropic base is added and mixed for approximately another 15 minutes. The main purpose of this pre-mixing step is to ensure that the fiber is distributed substantially and uniformly through the final thread compound, so that the formation and integrity of the film are optimized. Of course, pre-mixing can also be done in colloidal mixers and other types of apparatus. Additionally, pre-mixing can be previously cast and remove any non-dispersed fiber. The fiber-containing premix can then be added to the other ingredients in a conventional, usually vertical, mixer. The compound is mixed for at least 30 minutes after the addition of ingredient to ensure homogeneity * Of course, shorter and longer mixing times can be used depending on the speed and type of the mixer. The present invention solved problems associated with currently available counter-capture compounds for threaded connections made of specialty alloys prone to galling under high stress conditions, wherein large amount of graphitic additives or other type of anti-wear additives are used requiring addition of amount. Large metal powder or metal flake. The inventors surprisingly found that fluorides such as calcium fluorides used in large amounts generally greater than about 5% by weight can avoid these problems and produced superior compositions designed to protect threads of alloys under conditions of high stress. The examples are illustrative of these compositions and, therefore, should not be considered as limiting the scope of the present invention. EXPERIMENTAL SECTION EXAMPLE 1 This example illustrates a preferred capture composition of this invention using a calcium sulfonate complex, thixotropic base material and 30% by weight of calcium fluoride as the anti-capture agent and 9.4% by weight of salts of calcium. calcium as one of the limit lubricants. The composition includes the following ingredients and amounts; Ingredient Quantity (% by weight) base fat of calcium sulfonate complex 58.10 Calcium salts 9.4 Calcium fluoride 30.00 Glue 0.40 H2S inhibitor 0.10 Hydrocarbon fiber 1.00 Graphite without ash / Carbon 1.00 Total 100.00 The calcium salt can be carbonate , acetate, olbdate, sulfonate, borate, calcium stearate or mixtures thereof. The composition is generally mixed in a temperature controlled mixer or vessel reactor for a time and at a temperature sufficient to generate a substantially homogeneous composition, wherein the substantially homogeneous term means that the composition does not vary by more than about 5% inside the reactor and preferably does not vary by more than about 2%. In addition, the composition may vary in percent by weight of the ingredients in +. about 10%, preferably, + about 5% and particularly + about 2.5%. EXAMPLE 2 This example illustrates a preferred capture composition of this invention which uses a complex of calcium sulfonate, thixotropic base material and 15% by weight of calcium fluoride as the anti-capture agent and 18% by weight of calcium salts as one of the limit lubricants. The composition includes the following ingredients and amounts: Ingredient Amount (% by weight) Base grease of lithium sulfonate complex 42.45 Calcium salts 28.50 Calcium fluoride 15.00 PTFE 3.50 Glue 0.30 H2S inhibitor 0.10 Aramid fiber 0.15 Graphite sin. Carbon Ash 10.00 Total 100.00 The calcium salt may be carbonate, acetate, molybdate, sulfonate, borate, calcium stearate, or mixtures thereof.

The composition is generally mixed in a mixer or reactor with temperature controlled vessel for a time and at a temperature sufficient to generate a substantially homogeneous composition, wherein the substantially homogeneous term means that the composition does not vary by more than about 5% inside the reactor and preferably does not vary more than about 2%. In addition, the composition may vary in percent by weight of the ingredients by + about 10%, preferably, + about 5%, and particularly + about 2.5%. EXAMPLE 3 This example illustrates a preferred capture composition of this invention using a calcium sulfonate complex, thixotropic base material and 5% by weight of calcium fluoride co or an anti-capture agent and 18% by weight of calcium salts as one of the limit lubricants. The composition includes the following ingredients and amounts: Ingredient Amount (% by weight) Base grease metal complex 56.50 Calcium salts 18.00 Calcium fluoride 5.00 PTFE 7.00 Arami fiber at 0.50 Graphite 13.00 Total 100.00 The metal complex base grease can be an aluminum complex base grease, a base grease of lithium complex, a calcium complex base fat, a lithium 12-hydroxy stearate fat, a calcium fat 12-hydroxy stearate, or mixtures thereof. The calcium salt may be carbonate, acetate, molybdate, sulfonate, borate, calcium stearate, or mixtures thereof. The composition is generally mixed in a temperature-controlled mixer or vessel reactor for a time and at temperatures sufficient to generate a substantially homogeneous composition, wherein the term "substantially homogeneous" means that the composition does not vary by more than about 5% inside the reactor and preferably it does not vary by more than about 2%. In addition, the composition may vary in percent by weight of the ingredients by + about 10%, preferably, + about 5% and particularly +. approximately 2.5%. EXAMPLE 4 This example illustrates a preferred capture composition of this invention using a calcium sulfonate complex, thixotropic base material and 20% by weight of calcium fluoride as the anti-capture agent and 18% by weight of calcium salts as one of the limit lubricants. The composition includes the following ingredients and amounts: Ingredient Amount (% by weight) Hydrocarbon Fiber 1.00 Carbon Black 0.20 Sulfonate Complex 51.80 H2S Inhibitor 0.10 Calcium Salt 18.00 PTFE - 5-100 microns 3.50 Calcium Fluoride 20.00 Glue 0.40 Graphite without Ash 5.00 Total 100.00 The composition is usually mixed in a controlled mixer in temperature or vessel reactor for a time and at a temperature sufficient to generate a substantially homogeneous composition, wherein the substantially homogeneous term means that the composition does not vary by more than about 5% inside the reactor and preferably does not vary by more than about 2%. further, the composition may vary in percent by weight of the ingredients in + about 10%, preferably, + about 5% and particularly + about 2.5%, The composition had a density of 20 = 4 Ibs / gal and a Penetration of 309. EXAMPLE 5 This example illustrates a preferred capture composition of this invention using a calcium sulfonate complex, thixotropic base material and 20% by weight of calcium fluoride as the counter-capture agent and 15% by weight. weight of calcium salts as one of the limit lubricants. The composition includes the following ingredients and amounts: Ingredient Amount (% by weight) Hydrocarbon Fiber 1.20 Sulfonate Complex 53.30 Calcium Salts 15.00 Calcium Fluoride 20.00 PTFE - 5 Myrrone 3.00 Glue 0.40 H2S Inhibitor 0.10 Total 100.00 The composition generally it is mixed in a temperature controlled mixer or vessel reactor for a time and at temperatures sufficient to generate a substantially homogeneous composition, wherein the substantially homogeneous term means that the composition does not vary by more than about 5% inside the reactor and preferably not It varies by more than about 2%. In addition, the composition may vary in percent by weight of the ingredients in + about 10%, preferably, + about 5% and particularly + about 2.5%. The composition had a density of 11.0 Ibs / gal and a Penetration 314. Examples 4 and 5 represent intermediate formulations with different intermediate friction coefficients between the compositions of Examples 1 and 2. Example 1 provided optimal operation in diameter pipe Large design of special thread L-80 for abrasion resistance aided by high coefficient of friction. This allows the connection to be at lower contact stress when coupled using the specified torque values. Example 2 provided the best performance in certain chrome-raised main connections with respect to galling and friction resistance properties, but not for the main thread designs L-80 of another OEM thread design. Example 3 provides low friction and low galling resistance properties in high chromium and L-80 type alloys, and shows more than 15% improvement over amorphous graphite in lithium fat compositions used as the compound reference. Example 4 provided a high level of abrasion resistance and friction properties and worked well on both types of alloys and their OEM special thread designs. Example 5 provided less galling resistance than Example 4, despite having good friction properties. PTFE sprayed aerosol also results in too many particles per unit volume than the larger particle size distribution. It is known that as more PTFE is added, the composition shows a drop in film strength / galling resistance. The compositions are generally mixed in a temperature controlled mixer or vessel reactor for a time and at a temperature sufficient to generate a substantially homogeneous composition, wherein the substantially homogeneous term means that the composition does not vary by more than about 5% inside the reactor and preferably does not vary by more than about 2%. For compositions that include organic fibers, such as aramid fibers, the fibers are preferably pre-dispersed in the base fat prior to the addition of the other ingredients.

Restrictions / environmental and occupational health laws are more aggressively restrictive or prohibit the use of heavy metal additives. As drilling conditions become more severe, current "v rde" technology has not produced a product based on acceptable performance until this discovery was made. Molybdenum disulfide is also restricted for environmental matters as well as related to hydrolytic or galvanic corrosion, The discovery that calcium fluoride, when in conjunction with other calcium salts provides improved galling resistance in these high alloys in chromium and nickel , has allowed the development of a product that is not only safe, but also provides better abrasion resistance and lower break torque than the conventional API-MODIFIED or API-SILICONE described in American Petroleum Instítute Bulleting 5A2 and in Annex A of RP 5A3. These additives can be used in any system of thixotropic or reopéctica fat such as aluminum, calcium, lithium, barium or sodium. Polyurethane or thickened fats with polyurea complex can also be used. TEST RESULTS FOR MOVING COMPOSITIONS The formation torque in this type of connection does not provide the primary friction data to compare relative friction coefficients using 13% chromium alloy connections with high thread and high seal face interference. The shoulder torque will be the best measure of the relative friction difference between the thread compounds. Comparing the shoulder torque with API-MODIFIED, the following differences of friction data were observed. Torque Torque Composition of Aug? a API-MODIFIED Graphite Reference 3896 1.524 API-MODIFIED 2556 1.0 EXAMPLE 2 2413 0.944 EXAMPLE 1 3906 1.53 Comparing the data of torque from fracture to formation and corresponding immediate relationships and a data of torque of rupture to formation of a week and corresponding relationships provided the following values: Composition Break to Formation One Week API-MODIFIED 6467/5849 = l.lOí 10090/5849 = 1,727 EXAMPLE 2 6104/5850 = 1,043 8965/5850 = 1,531 EXAMPLE 1 101/5850 = 1,163 * 6890/5850 = 1.178 Reference of 7436/5860 = 1.26 No Data Graphite * May not be valid; only one data point. All references cited herein are incorporated herein by reference, While this invention has been fully and completely described, it should be understood that, within the scope of the appended claims, the invention may be practiced in a manner other than that of the invention. specifically described. Even when the invention has been described with reference to its preferred embodiments, from reading this description those of experience in the field can appreciate changes and modifications that can be made that do not go beyond the scope and spirit of the invention as described. above and as claimed below.

Claims (9)

1. CLAIMS 1. An anti-capture thread composition comprising a thixotropic base material, a boundary lubricant, and a metal fluoride, wherein the metal fluoride is present in an amount between approximately 5% by weight and approximately 50% by weight.
2. 2. The composition according to claim 1, wherein: the thixotropic base material is selected from the group consisting of a lithium complex grease, an aluminum complex fat, a complex fat calcium, and mixtures or combinations thereof; the limit lubricant is selected from the group consisting of a metal borate, metal acetate, metal carbonate, metal sulfate, and mixtures and combinations thereof; and the metal fluoride is selected from the group consisting of lithium fluoride (LiF), sodium fluoride (NaF), potassium fluoride (KF), rubidium fluoride (RbF), cesium fluoride (CsF), fluoride of magnesium (MgF2), calcium fluoride (CaF2), strontium fluoride (SrF2), yttrium fluoride (YF3), lanthanum fluoride (LaF3), cerium fluoride (CeF3), neodymium fluoride (NdF3), fluoride europium (EuF3), dysprosium fluoride (DyF3), or mixtures or combinations thereof.
3. 3. The composition according to claim 2, wherein the metal fluoride is calcium fluoride (CaF2).
4. 4. The composition according to claim 1, further comprising an anti-wear additive system and an anti-degrading additive system and synthetic fibers are selected from the group consisting of polyamide fibers, polyimide fibers, psoriasis fibers. , polycarbonate fibers, carbon and carbon fibers, and mixtures of the same and natural fibers are selected from the group of cellulose fibers, modified cellulose fibers, and mixtures thereof.
5. 5. The composition according to claim 4, wherein the composition comprises: about 58.10 + 10% by weight of a base fat of calcium sulfonate complex, about 9.4 + 10% by weight of a calcium salt, about 30.00 + 10% by weight of a calcium fluoride; approximately 0.40 + 1Q & by weight of an adhesive, approximately 0.10 + 10% by weight of an H2S inhibitor, approximately 1.00 + 10% by weight of a hydrocarbon fiber, and approximately 1.00 ± 10% by weight of a graphite / carbon.
6. 6. The composition according to claim 4, wherein the composition comprises: about 42.45 + 10% by weight of lithium sulfonate complex base fat, about 28.50 +.10% by weight of a salt of calcium, approximately 15.00 + 10% by weight of a calcium fluoride, approximately 3.50 + 10% by weight of a PTFE, approximately 0.30 + 10% by weight of an adhesive, approximately 0.10 + 10% by weight of a H2S inhibitor, approximately 0.15 + 10% by weight of an aramid fiber, and approximately 10.00 + 10% by weight of a graphite / carbon.
7. 7. The composition according to claim 4, wherein the composition comprises: about 56.50 + 10% by weight of a metal complex base fat, about 18.00 + 10% by weight of a calcium salt, about 5.00 + 10% by weight of a calcium fluoride, approximately 7.00 ± 10% by weight of a PTFE, approximately 0.50 + 10% by weight of an aramid fiber, and approximately 13.00 + 10% by weight of a graphite.
8. 8. The composition according to claim 4, wherein the composition comprises: about 1.00 + 10% by weight of a hydrocarbon fiber, about 0.20 + 10% by weight of a carbon black, about 51.80 + 10% by weight. weight of a sulfonate complex base fat, approximately 0.10 + 10% by weight of an H2S inhibitor, approximately 18.00 + 10% by weight of a calcium salt, approximately 3.50 + 10% by weight of a PTFE of 5- 100 microns, approximately 20.00 ± 10% by weight of a calcium fluoride, approximately 0.40 + 10% by weight of an adhesive, and approximately 5.00 ± 10% by weight of a graphite.
9. 9. The composition according to claim 4, wherein the composition comprises: about 1.20 + 10% by weight of a hydrocarbon fiber, about 53.30 + 10% by weight of a sulfonation complex base grease, about 15.00 + 10% by weight of a calcium salt, approximately 20-00 _ 10% by weight of a calcium fluoride, approximately 3.00 + 10% by weight of a PTFE of 5 microns, approximately 0.40 + 10% by weight of an adhesive, and approximately 0-10 + 10% by weight of an H2S inhibitor, 10.- A counter-capture thread composition comprising from about 40% to about 80% by weight. weight of a thixotropic base material, from about 5% to about 40% by weight of one or more limit lubricants and from about 5% to about 40% by weight of one or more metal fluorides. 11. The composition according to claim 10, wherein: the thixotropic base material is selected from the group consisting of a lithium complex fat, an aluminum complex fat, a calcium complex fat, and mixtures or combinations thereof; The limit lubricant is selected from the group consisting of a graphite, a graphitic type material, a silicate, a metal borate, metal acetate, metal carbonate, metal sulfate, and mixtures or combinations thereof; and the metal fluoride is selected from the group consisting of lithium fluoride (LiF), sodium fluoride (NaF), potassium fluoride (KF), rubidium fluoride (RbF), cesium fluoride (CsF), magnesium fluoride (MgF2), calcium fluoride (CaF2), strontium fluoride (SrF2), yttrium fluoride (YF3), lanthanum fluoride (LaF3), cerium fluoride (CeF3). Neodymium fluoride (NdF3). europium fluoride (EuF3), dysprosium fluoride (DyF3), or mixtures or combinations thereof. 12. The anti-capture compound according to claim 11, wherein the metal fluoride is calcium fluoride (CaE2). 13. The composition according to claim 10, further comprising up to about 12% by weight of an anti-wear additive system and up to about 5% by weight of an anti-degrade system and from about 0-1% to about 5% by weight of an anti-degrade system. % by weight of one or more finely divided fibers, 14. The composition according to claim 11, wherein the composition comprises: about 58.10 + 10% by weight of a calcium sulphonate complex base fat, about 9. , 4 + 10% by weight of a calcium salt, approximately 30.00 + 10% by weight of a calcium fluoride. about 0.40 + 10% by weight of an adhesive, about 0.10 + 10% by weight of an H2S inhibitor, about 1.00 + 10% by weight of a hydrocarbon fiber, and about 1.00 + 10% by weight weight of a graphite / carbon. 15. The composition according to claim 11, wherein the composition comprises: about 42.45 + 10% by weight of a lithium sulphonate complex base grease, about 28-50 ± 10% by weight of a calcium salt, approximately 15.00 + 10% by weight of a calcium fluoride. about 3.50 + 10% by weight of a PTFE, about 0.30 + 10% by weight of an adhesive, about 0.10 + 10% by weight of an H2S inhibitor, about 0.15-10% by weight of a fiber of aramid, and approximately 10.00 + 10% by weight of a graphite / carbon = 16. The composition according to claim 11, wherein the composition comprises: about 56.50 + 10% by weight of a complex base gauze of metal, approximately 18.00 + 10% by weight of a calcium salt, approximately 5.00 + 10% by weight of a calcium fluoride, approximately 7-00 + 10% by weight of a PTFE, approximately 0.50 + 10% by weight of an a-amide fiber, and approximately 13.00-10% by weight of a graphite. 17. The composition according to claim 11, wherein the composition comprises: about 1.00 + 10% by weight of a hydrocarbon fiber, about 0.20 + 10% by weight of a carbon black, about 51.80 + 10% by weight. weight of a sulfonate complex base fat, approximately 0-10 + 10% by weight of an H2S inhibitor, approximately 18.00 + 10% by weight of a calcium salt, approximately 3.50 + 10% by weight of a PTFE of 5-100 microns_r_ approximately 20-00 + 10% by weight of a calcium fluoride, approximately 0 * 40 ± 10% by weight of an adhesive, and approximately 5.00 + 10% by weight of a Graphite. 18. The composition according to claim 11, wherein the composition comprises: about 1.20 + 10% by weight of a hydrocarbon fiber, about 53.30 + 10% by weight of a sulfonate complex base fat, about 15.00 + 10% by weight of a calcium salt, about 20.00 + 10% by weight of a calcium fluoride, about 3.00 + 10% by weight of a 5 Micron PTFE, about 0.40 + 10% by weight of an adhesive, and approximately 0.10 + 10% by weight of a H2S inhibitor. 19. A method for protecting threaded connections comprising the steps of: applying a quantity of a composition against capture in accordance with claims 1-18 to surfaces of threaded connections of specialty alloy before formation, wherein the amount is sufficient to form an anti-capture film having sufficient strength to protect the threaded alloy-excoriation connection, and form the threaded connection * 20. The method according to claim 19, further comprising the step of: applying an additional amount of the composition after each connection break, but before the next formation.