10 results about "Brine mining" patented technology

The invention discloses a rock salt dissolved cavity carbon dioxide geological sequestration construction method, and relates to the technical field of carbon sequestration. The rock salt dissolving cavity carbon dioxide geological storage construction method comprises the following steps that S1, a storage site is selected according to production requirements and risk assessment; s2, the original brine mining well of the dissolving cavity is evaluated, if the original brine mining well meets the construction requirement, the original brine mining well is transformed, and if the original brine mining well does not meet the construction requirement, the original brine mining well is blocked, and a new injection well is constructed; s3, cavity expanding operation and sealing transformation operation are conducted on the dissolving cavity; s4, carbon sequestration operation is conducted on the dissolving cavity through the shaft; and S5, sealing operation is conducted on the shaft. According to the rock salt dissolving cavity carbon dioxide geological storage construction method, by optimizing the construction method, the leakage risk during carbon dioxide storage under a rock salt stratum structure is reduced, and the storage efficiency and the storage reliability of carbon dioxide are improved.

Water desalination systems and methods are designed to provide high recovery of saline water and highly concentrated water while minimizing energy usage. The systems process pre-treated water using fluidly coupled pumps and filters. A pump increases the pressure of the pre-treated water to a desired value for a specific filter. The filter separates the pre-treated water into a permeate water stream and a concentrated water stream. The systems further include multiple brine-concentration (BC) membranes that are interconnected in either a series or a parallel arrangement. These membranes are coupled with optional upstream and downstream reverse-osmosis (RO) membranes to produce high-purity permeate water. Energy recovery devices are integrated into the systems to recover hydraulic energy from the concentrated water and thus reduce energy consumption. The systems utilize optional salinity-adaptive multistage reverse-osmosis (SAMRO) pretreatment to achieve recoveries beyond conventional reverse-osmosis systems.

The invention discloses a novel injection-production medium in well rock salt exploitation, and a preparation method of the novel injection-production medium comprises the following steps: (1) injecting unqualified impurity-containing alkali liquor produced by a brine well into an old brine well, and removing impurities through the filtering effect of the old brine well to obtain calcium-containing light brine; the old brine well is a brine well of rock salt or associated minerals which are long in mining life and after salt resources are developed; and (2) introducing the calcium-containing light brine with qualified impurity content into a storage barrel to obtain the novel injection-production medium, and re-injecting the novel injection-production medium into a working brine well through a brine extraction pump to carry out a normal brine extraction process. The method has the advantages that the method is simple in process and long in mining time limit, the waste rock salt obtained after salt resource development or the old brine well with associated minerals can well purify the alkali liquor, the content of calcium ions in the alkali liquor can be reduced while impurities such as silt are remarkably removed, and the novel injection-production medium obtained after purification can obtain better injection-production effect compared with traditional alkali liquor.

The invention discloses a thin interbed salt cavern volume calculation method and device based on three-dimensional seismic exploration, and relates to the field of volume measurement, and the method comprises the steps: firstly, building a salt cavern geologic model according to a salt cavern development rule on the basis of analyzing and researching the stratigraphic structure and physical property parameter information of a salt mining area; establishing seismic response characteristics of the salt cavity model through forward modeling; the method comprises the following steps: selecting dominant attribute parameters reflecting salt cavern characteristics through extraction and analysis of seismic attributes by utilizing geometric, kinematics, dynamics and other characteristics represented by the seismic attributes; different parts of the salt cavern are depicted according to different advantage attributes, the spatial distribution state of the salt cavern is determined through seismic attribute fusion, and the seismic response volume of the salt cavern is calculated; according to the accurate salt well salt mining quantity index statistics and in combination with the salt mine-interlayer proportion, the salt mine grade, the salt ore density, the salt well brine mining rule and the like, the comprehensive cavity building rate of the salt cavity is analyzed; and calculating the effective volume of the salt cavern according to the earthquake response volume of the salt cavern depicted by the earthquake and the comprehensive cavern building rate.

The application provides a monitoring method and device for monitoring salt release capacity of a brine well in situ, and belongs to the field of hydrogeological monitoring. In view of the problem that the prior art is difficult to distinguish the salt source and release horizon, the application is based on the natural potential detection technology in the well, especially suitable for monitoring the salt release of the weakly permeable layer in the coastal brine mining area, so as to implement the in-situ and layered dynamic monitoring of the salt release of different horizons of the brine well, thereby simplifying the construction means, reducing the monitoring cost and having a good popularization and application prospect. Specifically, an electrical cable is vertically arranged along the well wall in the pumping well, a plurality of electrodes are arranged on the electrical cable at intervals, and the electrical cable is tightly attached to the well wall through a fixing mechanism; the natural potential data on the vertical profile are collected, the electrochemical potential change caused by the salt release is utilized, the potential anomaly at different depths is captured, the dominant horizon of the salt release in the weakly permeable layer is located and identified, and the relative rate of the salt release of each horizon is inversely estimated.

A system for sono-electrochemistry induced precipitation of carbonate minerals from brine or seawater. The system includes a first reactor (21), receiving the brine (22); a second reactor (30), receiving partially demineralized brine; a CO2 sprayer (23), spraying CO2 to the first reactor (21) and the second reactor (30); a power supply (24); an ultrasonic probe (25); a graphite electrode (26); a metal auxiliary electrode (27); and a chlorine gas product (28), whereby a solid precipitate (29) is produced; a valve (31) to collect the solid precipitate (29) and to control transfer of brine (22) between the reactors (21) and (30); a collection cup (33) connected to the valve (31) to collect solid precipitate (29); slides (34) to enhance vortex mixing of brine (22) inside reactors (21, 30); tubes (35) embedded inside the slides (34) to allow pumped brine (22) to return into reactors (21, 30); and a reference electrode (36).

The invention discloses a salt cavern gas storage low-position brine discharging well cavity entering target spot positioning method and device, a medium and a product, and relates to the technical field of salt cavern gas storage engineering. The method comprises the steps that the spatial range of a three-dimensional seismic sediment area and a salt cavern bottom plate are obtained based on three-dimensional seismic detection data and sonar cavity measurement data; checking a salt cavern bottom plate based on the well body structure and the well completion geologic horizon of the salt cavern brine mining well; based on the depth of the salt cavern bottom plate after checking, the range of a cavity entering target of the low-position brine discharging well is determined, and a cavity entering target depth plane is formed; constructing a three-dimensional geologic model based on the drilling and logging geologic data of the injection and production well; and in the three-dimensional geologic model, based on the depth plane of the in-cavity target, obtaining a positioning result of the in-cavity target of the low-position brine discharging well. Risk points during design of the low-position brine discharging well can be effectively avoided, high-position gas injection and low-position brine discharging are achieved, and then the utilization rate of the space volume of the salt cavern is increased.

The application provides a method for in-situ monitoring of the mining effect of a brine mining well, and belongs to the field of geophysical exploration and hydrogeological monitoring. In order to overcome the shortcomings of the prior art, such as high cost, long cycle and only point information can be obtained, the method comprises the following steps: arranging a cross-shaped resistivity measuring line on the ground, and using the resistivity difference between brine, stratum medium and fresh water to realize in-situ, real-time and dynamic monitoring of the influence radius of the water pumping well and the salt replenishment direction. Specifically, a Wenner four-pole device is used to measure the background apparent resistivity before brine mining, and a background apparent resistivity matrix is constructed; during the brine mining process, continuous apparent resistivity measurement is carried out, the space-time distribution characteristics of salt migration are inversed according to the apparent resistivity change; the influence radius of the brine mining well is determined according to the spatial range of the apparent resistivity change in the two cross sections, the advantage direction discrimination index is calculated according to the amplitude difference of the apparent resistivity change in the two sections, and the advantage direction of salt replenishment is quantitatively determined.

The utility model discloses an antisludging agent filling system applied to a salt cavern type gas storage brine mining cavity, which comprises a clear water inlet pipeline, a water inlet pipeline, a brine output pipeline, an unsaturated brine tank water inlet pipeline and an unsaturated brine inlet pipeline, and the clear water inlet pipeline and the unsaturated brine inlet pipeline are connected in parallel and then converge to the water inlet pipeline; an outlet of the water inlet pipeline is respectively connected to a brine output pipeline and an unsaturated brine tank water inlet pipeline, and the unsaturated brine tank water inlet pipeline is communicated to the unsaturated brine water inlet pipeline; the inlet section of the water inlet pipeline is further communicated with a scale inhibitor filling tank, a scale inhibitor filling device and a scale inhibitor filling control valve, and a scale inhibitor stored in the scale inhibitor filling tank can be injected into the water inlet pipeline after being pressurized and subjected to flow control. The device is simple in structure, salt deposition and scaling phenomena of ground equipment and facilities and pipelines of the ground equipment and facilities are greatly relieved, the risk of brine leakage is reduced, the service life of a mechanical sealing piece is prolonged, and the brine extraction cavity forming efficiency and quality of the brine extraction well are improved.

The invention discloses a method for efficiently and newly building a brine well through one-injection and double-output of a well-rock salt ground well, and relates to the technical field of salt mine mining. The method comprises the steps that according to a preset design scheme, three brine well drill holes are formed in the ground and include the first drill hole, the second drill hole and the third drill hole, and the second drill hole located in the middle is firstly constructed; after construction of the second drill hole is completed, a cavity is built at the preset butt joint position, and an initial corrosion cavity is formed; and based on the cavity building position of the second drill hole, the first drill hole and the third drill hole in the two sides are constructed at the same time, and drilling is conducted in the direction of the initial corrosion cavity through the while-drilling orientation technology and is in butt joint and communicated. According to the method, the clear target spot is formed by drilling the hole in the middle in advance, the drilling-while-drilling orientation and near-target-spot corrosion technology is combined, the underground butt joint success rate is greatly increased, groove building and production are fused through the innovative one-injection double-output and circulating brine mining mode, the production period is remarkably shortened, and the production efficiency is improved. And the capacity is elastically regulated and controlled by flexibly switching the brine extraction channels, so that the service life of the well group is prolonged.