Weighted composition for treatment of a subterranean formation

Patent metadata

Field	Value
Publication number	US-2018298265-A1
Application number	US-201515753506-A
Country	US
Kind code	A1
Filing date	Sep 17, 2015
Priority date	Sep 17, 2015
Publication date	Oct 18, 2018
Grant date	—

Abstract

Various embodiments disclosed relate to weighted compositions for treatment of a subterranean formation. In various embodiments, the present invention provides a method of treating a subterranean formation. The method can include placing in the subterranean formation a coated weighting agent. The coated weighting agent can include a weighting agent and an inorganic coating material on the weighting agent.

First claim

What is claimed is:

1 .- 74 . (canceled)

75 . A method of treating a subterranean formation, the method comprising:
placing in the subterranean formation a weighted composition comprising a coated weighting agent comprising a weighting agent; and an inorganic coating material on the weighting agent.

76 . The method of claim 75 , wherein the method further comprises obtaining or providing the weighted composition, wherein the obtaining or providing of the weighted composition occurs above-surface, and/or wherein the method further comprises obtaining or providing the weighted composition, wherein the obtaining or providing of the weighted composition occurs in the subterranean formation, and, optionally, wherein the weighted composition is a drilling fluid, and, optionally, wherein the weighted composition is a drill-in fluid.

77 . The method of claim 75 , further comprising drilling into a production zone or reservoir in the subterranean formation using the weighted composition as a drill-in fluid.

78 . The method of claim 75 , further comprising cleaning the coated weighting agent from the production zone or reservoir after drilling into the production zone or reservoir.

79 . The method of claim 78 , wherein the cleaning comprises at least partially dissolving the coated weighting agent with an acidic solution, and/or, wherein the coated weighting agent has a greater surface roughness than the weighting agent, and, optionally, wherein the coated weighting agent has about 101% to about 100,000% of the surface area of the weighting agent, and, optionally, wherein the coated weighting agent has about 110% to about 10,000% of the surface area of the weighting agent.

80 . The method of claim 79 , wherein the coated weighting agent is a homogeneous suspension in the weighted composition, and, optionally, wherein the coated weighting agent does not settle out of the suspension under static conditions, and, optionally, wherein the coated weighting agent settles out of the suspension under static conditions more slowly than a suspension of the weighting agent in a corresponding composition that is free of the coated weighting agent under static conditions, and, optionally, wherein the coated weighting agent has a particle size of at least about 0.1 μm, and, optionally, wherein the coated weighting agent has a specific gravity of at least about 2.6.

81 . The method of claim 75 , wherein the weighting agent is an acid-treated weighting agent.

82 . The method of claim 81 , wherein the acid-treated weighting agent has greater surface area than a corresponding weighting agent not treated with acid, and, optionally, wherein the acid-treated weighting agent has a greater surface roughness than a surface roughness of a corresponding weighting agent not treated with acid, and, optionally, wherein the acid-treated weighting agent has greater concentration of inorganic coating material-seeding sites than the concentration of such seeding sites on a corresponding weighting agent not treated with acid.

83 . The method of claim 75 , wherein the weighting agent is selected from the group consisting of Al 2 O 3 , Al 2 SiO 5 , BiO 3 , Bi 2 O 3 , CaSO 4 , CaPO 4 , CdS, Ce 2 O 3 , (Fe,Mg)Cr 2 O 4 , Cr 2 O 3 , CuO, Cu 2 O, Cu 2 (AsO 4 )(OH), CuSiO 3 .H 2 O, Fe 3 Al 2 (SiO 4 ) 3 , Fe 2+ Al 2 O 4 , Fe 2 SiO 4 , FeCO 3 , Fe 2 O 3 , α-Fe 2 O 3 , α-FeO(OH), Fe 3 O 4 , FeTiO 3 , (Fe,Mg)SiO 4 , (Mn,Fe,Mg)(Al,Fe) 2 O 4 , CaFe 2+ 2 Fe 3+ Si 2 O 7 O(OH), (YFe 3+ Fe 2+ U,Th, Ca) 2 (Nb,Ta) 2 O 8 , MgO, Mn 2 SiO 4 , Mn(II) 3 Al 2 (SiO 4 ) 3 , (Na 0.3 Ca 0.1 K 0.1 )(Mn 4+ ,Mn 3+ ) 2 O 4 .1.5 H 2 O, (Mn,Fe) 2 O 3 , (Mn 2+ ,Fe 2+ ,Mg)(Fe 3+ ,Mn 3+ ) 2 O 4 , (Mn 2+ ,Mn 3+ ) 6 [(O 8 )(SiO 4 )], Ca(Mn 3+ ,Fe 3+ ) 14 SiO 24 , Ba(Mn 2+ )(Mn 4+ ) 8 O 16 (OH) 4 , CaMoO 4 , MoO 2 , MoO 3 , NbO 4 , (Na,Ca) 2 Nb 2 O 6 (OH,F), (Y,Ca,Ce,U,Th)(Nb,Ta,Ti) 2 O 6 , (Y,Ca,Ce,U,Th)(Ti,Nb,Ta) 2 O 6 , (Fe,Mn)(Ta,Nb) 2 O 6 , (Ce,La,Ca)BSiO 5 , (Ce,La)CO 3 F, (Y,Ce)CO 3 F, MnO, MnO 2 , Mn 2 O 3 , Mn 3 O 4 , Mn 2 O 7 , MnO(OH), (Mn 2+ ,Mn 3+ ) 2 O 4 , NiO, NiAs 2 , NiAs, NiAsS, Ni 2 Fe to Ni 3 Fe, (Ni,Co) 3 S 4 , PbSiO 3 , PbCO 3 , (PbCl) 2 CO 3 , Pb 2+ 2Pb 4+ O4, PbCu[(OH) 2 (SO 4 )], (Sb 3+ ,Sb 5+ )O 4 , Sb 2 SnO 5 , Sc 2 O 3 , SnO, SnO 2 , Cu 2 FeSnS 4 , SrO, SrSO 4 , SrCO 3 , (Na,Ca) 2 Ta 2 O 6 (O,OH,F), ThO 2 , (Th,U)SiO 4 , TiO 2 , UO 2 , V 2 O 3 , VO 2 , V 2 O 5 , Pb 5 (VO 4 ) 3 Cl, VaO, Y 2 O 3 , ZnCO 3 , ZnO, ZnFe 2 O 4 , ZnAl 2 O 4 , ZnCO 3 , ZnO, ZrSiO 4 , ZrO 2 , ZrSiO 4 , allemontite, altaite, aluminum oxide, anglesite, tin oxide, antimony trioxide, awaruite, barium sulfate, bastnaesite, beryllium oxide, birnessite, bismite, bismuth oxycarbonates, bismuth oxychloride, bismuth trioxide, bismuth (III) oxide, bixbyite, bournonite, braunite, brucite, cadimum sulfide, calayerite, calcium oxide, calcium carbonate, cassiterite, cerium oxide, cerussite, chromium oxide, clinoclase, columbite, copper, copper oxide, corundum, crocoite, cuprite, dolomite, euxenite, fergusonite, franklinite, gahnite, geothite, greenockite, hausmmanite, hematite, hercynite, hessite, ilvaite, Jacobsite, magnesium oxide, manganite, manganosite, magnetite, manganese dioxide, manganese (IV) oxide, manganese oxide, manganese tetraoxide, manganese (II) oxide, manganese (III) oxide, microlite, minium, molybdenum (IV) oxide, molybdenum oxide, molybdenum trioxide, nickel oxide, pearceite, phosgenite, psilomelane, pyrochlore, pyrolusite, rutile, scandium oxide, siderite, smithsonite, spessartite, stillwellite, stolzite, strontium oxide, tantalite, tenorite, tephroite, thorianite, thorite, tin dioxide, tin (II) oxide, titanium dioxide, vanadium oxide, vanadium trioxide, vanadium (IV) oxide, vanadium (V) oxide, witherite, wulfenite, yttrium oxide, zincite, zircon, zirconium oxide, zirconium silicate, zinc oxide, and combinations thereof.

84 . The method of claim 75 , wherein the inorganic coating material is a crystalline inorganic coating material, and, optionally, wherein the crystalline inorganic coating material is selected from the group consisting of As 2 S 3 , BaCO 3 , (BiO) 2 CO 3 , (Ca,Mg)CO 3 , FeCO 3 , PbCO 3 , (PbCl) 2 CO 3 , PbCu(OH) 2 (SO 4 ), Sb 2 S 3 , SnS, SnS 2 , Sn 2 S 3 , SrSO 4 , SrCO 3 , ZnCO 3 , ankerite, aluminum phosphate, aluminum sulfate, barium phosphate, iron phosphate, barium sulfide, barium sulfate, beryllium sulfide, bismuth sulfide, calcium oxalate, calcium sulfide, calcium phosphate, calcium sulfate, calcium citrate, calcium carbonate, calcite, aragonite, manganese carbonate, gaspite, huntite, magnesite, nickel carbonate, strontium sulfide, thallium sulfide, and mixtures thereof, and, optionally, wherein the inorganic coating material is an amorphous inorganic coating material, and, optionally, wherein the amorphous inorganic coating material is selected from the group consisting of As 2 S 3 , BaCO 3 , (BiO) 2 CO 3 , (Ca,Mg)CO 3 , FeCO 3 , PbCO 3 , (PbCl) 2 CO 3 , PbCu(OH) 2 (SO 4 ), Sb 2 S 3 , SiO 2 , SnS, SnS 2 , Sn 2 S 3 , SrSO 4 , SrCO 3 , ZnCO 3 , aluminum silicate, aluminum phosphate, aluminum sulfate, barium phosphate, iron phosphate, barium sulfide, barium sulfate, bismuth sulfide, calcium oxalate, calcium silicate, calcium sulfide, calcium phosphate, calcium sulfate, calcium citrate, calcium tungstate, copper sulfide, graphite, iron sulfide, manganese carbonate, molybdenum disulfide, lithium iron(II) silicate, nickel carbonate, potassium silicate, strontium silicate aluminate, strontium sulfide, tungsten disulfide, zinc sulfide, zirconium(IV) silicate, and mixtures thereof, and, optionally, further comprising growing the crystalline inorganic coating material on the weighting agent, and, optionally, wherein the coated weighting agent is made by a proces

Assignees

• Halliburton Energy Services Inc

Inventors

• Mcdaniel Cato Russell
• Jamison Dale E
• Ye Xiangnan
• Harvey Timothy N

Classifications

• C04B28/02

  containing hydraulic cements other than calcium sulfates · CPC title

• C09K8/48

  Density increasing or weighting additives · CPC title

• C09K8/032 Primary

  Inorganic additives · CPC title

• C04B20/023

  Chemical treatment · CPC title

• C04B20/1074

  Silicates, e.g. glass · CPC title