| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 81 | Control of particulate flowback in subterranean wells | US510399 | 1995-08-02 | US5582249A | 1996-12-10 | William J. Caveny; Jim D. Weaver; Philip D. Nguyen |
| The addition of an adhesive coated material in intimate mixture with particulates for fracturing, gravel packing or other formation treatments decreases or substantially eliminates the flowback of particulates whether proppants or formation fines while stabilizing the particulate within the formation. Preferred adhesive coated materials include glass or ceramic fibers, polyolefins, polyamides, polyvinyls and cellulose derivatives in the form of particles, ribbons, fibers or flakes. | ||||||
| 82 | Method of particulate consolidation | US213131 | 1994-03-14 | US5443123A | 1995-08-22 | Stanley J. Wall; David B. Allison; Michael W. Henry |
| A method of consolidating an incompetent particulate in a subterranean formation penetrated by a wellbore accomplished by introducing fluids to be injected into a wellbore into coiled tubing while the tubing is outside the wellbore and thereafter pumping the fluids from the coiled tubing into the wellbore after circulating ports open in a firing head in response to initiation of the variable delay firing head for ignition of a gas generator. | ||||||
| 83 | Unique method of hydraulic fracturing | US151662 | 1993-11-15 | US5402846A | 1995-04-04 | Alfred R. Jennings, Jr.; Eve S. Sprunt |
| An improved method for hydraulically fracturing a formation or reservoir where a thermo-setting gellable mixture is utilized. This thermo-setting mixture is foamed either at the surface or in situ under fracturing pressures and conditions. The mixture and carrier fluid is of a composition such that the foamed mixture has a viscosity of sufficient magnitude to cause a created fracture to grow while the foamed mixture is kept under fracturing pressure and conditions. Once a fracture of a desired size and length has been generated, the resin is ignited and thermally set thus forming a porous hardened solid within the fracture thereby holding the fracture open. Once combustion is finished, no spent fracturing fluids or load fluids remain to be recovered. This porous solid props the fracture open thereby increasing the conductivity of the formation or reservoir and fluid flow therefrom. | ||||||
| 84 | Method and apparatus for perforating and fracturing in a borehole | US975497 | 1992-11-10 | US5355802A | 1994-10-18 | Luc Petitjean |
| A method and apparatus for perforating a formation surrounding a wellbore and initiating and propagating a fracture in that formation to stimulate hydrocarbon production from the wellbore. The technique uses a perforation and propellant loading device which perforates and fractures in a single operation to greatly increase the efficiency over current perforation techniques. Efficiency is increased by a number of factors including firing the perforating shaped charge through a gas zone, reducing the overall perforation damage to the formation, increasing operation speed, and increasing pressure in the area of the borehole surrounding the production zone before perforation and propagation are initiated. In accordance with the invention, the timing of the propellant ignition and charge detonation are critical to achieve the desired results. | ||||||
| 85 | Sand control agent and process | US63200 | 1993-08-16 | US5343948A | 1994-09-06 | Paul Shu |
| A method for forming a consolidated gravel pack in a washed-out interval is provided where a borehole penetrates an unconsolidated or loosely consolidated oil or gas reservoir which is likely to introduce substantial amounts of sand into the borehole. After perforating the borehole's casing at a washed-out interval of the formation, sand is introduced into the interval. Afterwards, an aqueous hydroxide solution is injected into said interval. Next, a spacer volume of a water-immiscible hydrocarbonaceous liquid slug is injected into the interval. Thereafter, a water-miscible organic solvent slug containing alkylpolysilicate is injected into the interval. A permeability retentive silica cement is formed in the interval thereby making a consolidated gravel pack. Injection of the aqueous hydroxide and alkylpolysilicate slugs is continued until silica cement has been deposited to an extent sufficient to exclude formation fines and sand. | ||||||
| 86 | Method of gravel packing a well | US920750 | 1992-07-28 | US5269375A | 1993-12-14 | Donald E. Schroeder, Jr. |
| A method of gravel packing a well. A flow-reducing material is introduced into the annulus between a tubular liner and the well bore so as to collect at the perforations in the well bore and the apertures in the liner. This slows gravel slurry flow to the screen inner annulus and to the perforations to prevent gravel from bridging the annulus at these locations. The material is removed after the risk of bridging has passed. Various flow-reducing materials, such as wax flakes, salt, clay and gel, may be employed. The method is particularly useful in deviated wells. | ||||||
| 87 | Acidizing method for gravel packing wells | US810463 | 1991-12-19 | US5222556A | 1993-06-29 | William P. Donlon; Lloyd G. Jones; Charles S. Yeh; E. Thomas Strom |
| A method for gravel packing perforations in a wellbore where an acid is directed into the perforations so as to dissolve formation fines in channels contained in said perforations. The acid is of a strength sufficient to dissolve said fines. After the fines are dissolved, a sand consolidation agent is introduced into the perforations before the channels can be filled with formation fines. The consolidation agent remains in the perforations for a time sufficient to form a cement in situ which cement has permeability retentive characteristics. The cement forms pores of a size sufficient to exclude formation fines from the wellbore. Thereafter, a substantially fines free hydrocarbonaceous fluid is produced from the wellbore. | ||||||
| 88 | Acidizing method for gravel packing wells | US810665 | 1991-12-19 | US5219026A | 1993-06-15 | Paul Shu; William P. Donlon; E. Thomas Strom; Lloyd G. Jones |
| A method for gravel packing perforations in a wellbore where an acid is directed into the perforations so as to dissolve formation fines in channels contained in said perforations. The acid is of a strength sufficient to dissolve said fines. After the fines are dissolved, a three slug sand consolidating agent is introduced into the perforations before the channels can be filled with formation fines. The consolidating agent remains in the perforations for a time sufficient to form a silicate cement in situ which cement has permeability retentive characteristics. The cement forms pores of a size sufficient to exclude formation fines from the wellbore. Thereafter, the wellbore is packed with gravel to remove any escaping fines from hydrocarbonaceous fluids produced to the surface. | ||||||
| 89 | Horizontal well completion methods | US828076 | 1992-01-30 | US5211234A | 1993-05-18 | L. Craig Floyd |
| Methods of completing a well bore having a conduit disposed therein where portions of the well bore and conduit are positioned substantially horizontally in a subterranean producing formation are provided. A hardenable resin composition coated particulate solid material is placed in the annulus between the sides of the well bore and the conduit, and the resin composition is caused to harden whereby the particulate material is consolidated into a hard permeable mass. An aqueous cement slurry is introduced into the permeable consolidated particulate material whereby horizontal sections thereof are isolated which allows tests and/or treatments in selected portions of the horizontal well to be performed. | ||||||
| 90 | Method of sand consolidation with resin | US718346 | 1991-06-19 | US5178218A | 1993-01-12 | John M. Dees |
| Methods are provided for chemically consolidating subterranean formations around wells using resins. Resins are forced into the formations by high pressures instantaneously applied when perforations are formed in casing in wells or when pressures are released from tubing in wells. Perforating, explosives or gas generators may be used in addition to the high pressures for driving resins into formations. The resins are polymerized to form permeable consolidated zones around wells. | ||||||
| 91 | Method for the control of solids accompanying hydrocarbon production from subterranean formations | US602566 | 1990-10-24 | US5105886A | 1992-04-21 | Malcolm K. Strubhar; John C. Healy |
| A method for gravel packing a wellbore where a resin-coated sand or "gravel" is utilized. First, the wellbore is perforated at the productive interval in a manner sufficient to hydraulically fracture the formation. Afterwards, the formation is hydraulically fractured via a frac fluid containing a resin-coated sand. During this fracturing operation, a resultant fracture is propped with the resin-coated sand. The frac fluid is pumped down the wellbore until "screen out" occurs at perforations in the wellbore. The resin-coated sand is allowed to remain in the fracture, perforations, and wellbore until a permeable, porous consolidated mass is formed. After the mass has formed, excess consolidated sand is removed from the wellbore. When the formation is produced, formation solids are contained by the consolidated mass in the fracture and perforations. | ||||||
| 92 | Consolidation agent and method | US622586 | 1990-12-03 | US5088555A | 1992-02-18 | Paul Shu |
| A sand consolidation method is provided for use in a borehole having an unconsolidated or loosely consolidated oil or gas reservoir which is likely to introduce substantial amounts of sand into the borehole and cause caving. After perforating the borehole's casing at an interval of the formation where sand will be produced, an aqueous solution of potassium silicate is injected into said interval. Thereafter, an alcoholic solution of hydrated calcium chloride is injected into the interval. A permeability retaining calcium silicate cement is formed in the interval. Injection of the potassium silicate and hydrated calcium chloride solutions is continued until the interval has been consolidated by the calcium silicate cement to an extent sufficient to prevent sand migration and thereby prevent caving. | ||||||
| 93 | Method of particulate consolidation | US429749 | 1989-10-30 | US4936385A | 1990-06-26 | Jimmie D. Weaver; Joseph R. Murphey |
| The present invention provides a method of consolidating an incompetent subterrnean formation. An acid curable resin consolidating fluid is positioned within casing in a wellbore in the vicinity of perforations through the casing. A gas generating charge positioned within the casing then is ignited to generate gas pressure which rapidly forces the consolidating fluid through the perforations and into the subterranean formation while substantially simultaneously catalyzing the resin composition. The consolidating fluid is caused to rapidly harden to consolidate the formation in the vicinity of the perforation without any significant permeability loss. | ||||||
| 94 | Sand consolidation methods | US357571 | 1989-05-30 | US4903770A | 1990-02-27 | Robert H. Friedman; Billy W. Surles; Philip D. Fader |
| Methods are provided for selectively consolidating naturally occurring mineral grains such as sand within a subterranean formation to form a fluid permeable barrier which restrains the movement of sand particles when oil passes through the barrier. A fluid comprising a polymerizable monomer such as furfural alcohol and as a diluent, a polar organic solvent such as methanol and a strong, non-volatile acid catalyst such as sulfuric acid is provided, mixed with steam to form a multiphase or aerosol treating fluid, and injected into the formation to be consolidated. An ester such as butyl acetate is incorporated in the fluid when the steam quality is less than 80 percent. The well is shut in for sufficient period of time for polymerization to convert the injected fluids into a permeable barrier around the wellbore. | ||||||
| 95 | Method for completing wells in unconsolidated formations | US171709 | 1988-03-22 | US4830110A | 1989-05-16 | Thomas K. Perkins |
| Unconsolidated formations may be produced to yield hydrocarbons and other fluids by forming an openhole wellbore in the region to be produced, cleaning the wellbore face with a low solids content, low leakoff type fluid and/or underreaming the wellbore to provide a clean face in the region of interest and followed by insertion of a production tubing string including a filter medium which will retain larger formation sand particles in the wellbore cavity but will allow a limited amount of solids fines to be produced with the produced fluids. An in situ sand pack is formed within the wellbore cavity together with a dilatant zone of generally cylindrical shape having an outer radius which grows into the formation until the in situ stresses increase and the dilatant zone as well as the in situ sand pack become stable. This type of well completion eliminates the requirement for other means of consolidating formation sands as well as the cost of installing artificial gravel packs in a well. | ||||||
| 96 | Method for consolidating formation surrounding borehole | US880035 | 1986-06-30 | US4703800A | 1987-11-03 | Mohsen R. Hanna |
| There is disclosed a process for transforming an unconsolidated formation surrounding a borehole into a consolidated state for the prevention of the migration of small particles during the removal of fluid from the borehole. The formation is heated to a predetermined temperature capable of supporting low temperature oxidation, precipitation of asphaltenes occurs in the formation upon injection of unheated air, without fracturing the formation, into the borehole and results in consolidation of the formation. | ||||||
| 97 | Technique for improving gravel pack operations in deviated wellbores | US815968 | 1986-01-03 | US4703799A | 1987-11-03 | Alfred R. Jennings, Jr.; Malcolm K. Strubhar |
| A method for completion of an inclined or deviated well having an in-line opening on its lower side. A work string tubing is removed and a production tube having a slotted liner is directed through a gelled fluid. The gelled fluid is removed and an in-casing gravel pack is placed within said wellbore. Hydrocarbonaceous fluids are then produced from said wellbore. | ||||||
| 98 | Well bore recompletion | US669418 | 1984-11-08 | US4589490A | 1986-05-20 | Carey D. K. Darr; Eric K. Brown |
| Well bores employed for production of hydrocarbons having open hole completion and zonal breakdown in the locus of the well bore are recompleted, advantageously for injection of a fluid such as CO.sub.2 in an enhanced oil recovery process. Recompletion is effected by packing off the open hole interval, emplacing a particulate material in the packed off interval and broken down zone, adhering the particulates together with an adhesive to form a permeable synthetic rock-like material, reaming out the open hole interval to a greater diameter than the original completion, setting a casing over the open hole interval, cementing between the casing and the reamed out hole, and perforating at the zones to be isolated and to be communicated with from the well bore, e.g., for CO.sub.2 injection. | ||||||
| 99 | Hydraulic fracturing method employing special sand control technique | US630177 | 1984-07-12 | US4549608A | 1985-10-29 | Lawrence R. Stowe; Malcolm K. Strubhar |
| A subsurface oil or gas reservoir is hydraulically fractured by injecting a fracturing fluid through perforations in the casing of a well penetrating into such subsurface reservoir. The fracturing fluid contains a clay stabilizing agent for stabilizing clay particles or fines along the face of the resulting formation fracture. A proppant comprising a gravel packing sand is injected into the fracture. Oil or gas is then produced from the reservoir through the fracture into the well. | ||||||
| 100 | Process and device for injecting a liquid agent used for treating a geological formation in the vicinity of a well bore traversing this formation | US161616 | 1980-06-20 | US4298066A | 1981-11-03 | Jean Colonna; Jean-Michel Fitremann; Richard Genin; Jean-Paul Sarda |
| A technique for liquid treating a geological formation comprises spraying the liquid with a pressurized carrier gas, using a spraying pipe whose length and diameter are adjusted as a function of the pressure prevailing at the level of the formation and of the characteristics of the injected liquid and the pressurized carrier gas, so that the size of the liquid droplets at the outlet of the spraying pipe has a narrow range of distribution about a single preselected value. | ||||||
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