Consolidating spacer fluids and methods of use
First Claim
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1. A method of displacing a drilling fluid disposed in a well bore annulus, comprising:
- providing a spacer fluid comprising a kiln dust, wherein the spacer fluid has at least one property at well bore conditions, wherein the property is selected from the group consisting of;
(i) a yield point of from about 25 Pascals to about 250 Pascals, (ii) a static gel strength of from about 70 lbf/100 ft2 to about 500 lbf/100 ft2, (iii) a yield limit in compression from about 1 psi to about 2,000 psi, (iv) an unconfined uniaxial compressive strength of from about 5 psi to about 10,000 psi, (v) a zero gel time of about 8 hours or less, and (vi) a transition time of about 45 minutes or less;
using the spacer fluid to displace at least a portion of the drilling fluid from the well bore annulus; and
allowing at least a portion of the spacer fluid to consolidate in the well bore annulus, and wherein the portion of the spacer fluid consolidates in the well bore to meet the property.
1 Assignment
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Accused Products
Abstract
Disclosed are spacer fluids and methods of use in subterranean formations. Embodiments may include use of consolidating spacer fluids in displacement of drilling fluids from a well bore annulus.
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Citations
76 Claims
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1. A method of displacing a drilling fluid disposed in a well bore annulus, comprising:
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providing a spacer fluid comprising a kiln dust, wherein the spacer fluid has at least one property at well bore conditions, wherein the property is selected from the group consisting of;
(i) a yield point of from about 25 Pascals to about 250 Pascals, (ii) a static gel strength of from about 70 lbf/100 ft2 to about 500 lbf/100 ft2, (iii) a yield limit in compression from about 1 psi to about 2,000 psi, (iv) an unconfined uniaxial compressive strength of from about 5 psi to about 10,000 psi, (v) a zero gel time of about 8 hours or less, and (vi) a transition time of about 45 minutes or less;using the spacer fluid to displace at least a portion of the drilling fluid from the well bore annulus; and allowing at least a portion of the spacer fluid to consolidate in the well bore annulus, and wherein the portion of the spacer fluid consolidates in the well bore to meet the property. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A method of displacing a drilling fluid disposed in a well bore annulus, comprising:
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using a consolidating spacer fluid to displace at least a portion of the drilling fluid from the well bore annulus, wherein the consolidating spacer fluid comprises a kiln dust; and allowing at least a portion of the consolidating spacer fluid to consolidate in the well bore annulus wherein the at least a portion of the consolidating spacer fluid has a zero gel time of about 4 hours or less, and wherein the at least a portion of the consolidating spacer fluid consolidates to have at least one property selected from the group consisting of;
(i) a yield point of from about 25 Pascals to about 250 Pascals, (ii) a static gel strength of from about 70 lbf/100 ft2 to about 500 lbf/100 ft2, (iii) a yield limit in compression from about 1 psi to about 2,000 psi, and (iv) an unconfined uniaxial compressive strength of from about 5 psi to about 10,000 psi. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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35. A method of displacing a drilling fluid disposed in a well bore annulus, comprising:
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using a consolidating spacer fluid to displace at least a portion of the drilling fluid from the well bore annulus, wherein the consolidating spacer fluid comprises a kiln dust; and allowing at least a portion of the consolidating spacer fluid to consolidate in the well bore annulus, wherein the at least a portion of the consolidating spacer fluid has a transition time of about 45 minutes or less, and wherein the at least a portion of the consolidating spacer fluid consolidates to have at least one property selected from the group consisting of;
(i) a yield point of from about 25 Pascals to about 250 Pascals, (ii) a static gel strength of from about 70 lbf/100 ft2 to about 500 lbf/100 ft2, (iii) a yield limit in compression from about 1 psi to about 2,000 psi, and (iv) an unconfined uniaxial compressive strength of from about 5 psi to about 10,000 psi. - View Dependent Claims (36, 37, 38, 39, 40, 41, 42, 43, 44, 45)
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46. A method of displacing a drilling fluid disposed in a well bore annulus, comprising:
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introducing a consolidating spacer fluid into the well bore annulus to displace at least a portion of the drilling fluid from the well bore annulus; and allowing at least a portion of the consolidating spacer fluid to consolidate in the well bore annulus to have at least one property selected from the group consisting of;
(i) a yield point of from about 25 Pascals to about 250 Pascals, (ii) a static gel strength of from about 70 lbf/100 ft2 to about 500 lbf/100 ft2, (iii) a yield limit in compression from about 1 psi to about 2,000 psi, and (iv) an unconfined uniaxial compressive strength of from about 5 psi to about 10,000 psi;wherein the consolidating spacer fluid comprises water a kiln dust, and at least one additive selected from the group consisting of gypsum, fly ash, bentonite, hydroxyethyl cellulose, sodium silicate, a hollow microsphere, gilsonite, perlite, a gas, an organic polymer, a biopolymer, latex, ground rubber, a surfactant, crystalline silica, amorphous silica, silica flour, fumed silica, nano-clay, salt, fiber, hydratable clay, rice husk ash, micro-fine cement, metakaolin, zeolite, shale, pumicite, Portland cement, Portland cement interground with pumice, barite, slag, lime, and any combination thereof; and wherein the portion of the consolidating spacer fluid has a zero gel time of about 4 hours or less. - View Dependent Claims (47, 48, 49, 50, 51, 52, 53, 54, 55, 56)
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57. A method of displacing a drilling fluid disposed in a well bore annulus, comprising:
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using a consolidating spacer fluid to displace at least a portion of the drilling fluid from the well bore annulus; introducing a cement composition into the well bore annulus, wherein the consolidating spacer fluid separates the cement composition from the drilling fluid; and allowing at least a portion of the consolidating spacer fluid to consolidate in the well bore annulus, wherein the at least a portion of the consolidating spacer fluid has a transition time that is shorter than a transition time of the cement composition. - View Dependent Claims (58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76)
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Specification