2 results about "Formation water" patented technology

The invention discloses a method for determining reservoir water saturation, which comprises the following steps of: obtaining the porosity and permeability of a rock core, and establishing a porosity-permeability calculation model by combining acoustic logging data; Obtaining a saturation index n value, and establishing a reservoir resistivity calculation model when the water content is 100%; Respectively establishing a calculation model of irreducible water saturation and residual oil saturation; Determining the resistivity of the original formation water and the resistivity of the slurry filtrate of the oil reservoir by utilizing test analysis, and determining the resistivity of a pure oil layer by irreducible water saturation, residual oil saturation, resistivity of a flushing zone anda saturation index; And establishing a new reservoir water saturation calculation model, and calculating the reservoir water saturation through the reservoir measurement resistivity, the reservoir resistivity when the water content is 100%, the pure oil layer resistivity and the irreducible water saturation. According to the method, the water saturation of the reservoir stratum is solved point bypoint through logging data without depending on an alpha formula under the condition that formation water resistivity of different stratum sections of the stratum is unknown, and a new method is provided for accurately solving the water saturation of the reservoir stratum.

The invention discloses an overflow type lead-acid storage battery formation water bath. The overflow type lead-acid storage battery formation water bath comprises a bath shell, a roll shaft, a water tank, a temperature controller, a valve, a leak-off pipe, a drainage exit, a heating pipe and a temperature sensor, wherein an overflow port is formed in the lower part at the middle position of the bath shell in a side wall length direction; the water tank is connected to the position of the overflow port of the bath shell in a sealing manner; an opening of the water tank is upward to form a container communicating with the inner cavity of the bath shell; the water tank is internally provided with the vertically arranged leak-off pipe; a pipe opening in the upper end of the leak-off pipe uses the opening of the water tank as an upper limit; and a pipe opening in the lower end of the leak-off pipe passes through a base plate of the water tank and is directly connected to the drainage exit to form a leakage flow passage. The temperature controller is controlled by the temperature sensor, and the water temperature is adjusted by adjusting the opening of a hot water inlet or a cold water inlet at random. The storage level and water temperature inside the overflow type lead-acid storage battery formation water bath are controllable, the overflow type lead-acid storage battery formation water bath is simple in structure and high in degree of automation, constant water temperature is beneficial for improving formation quality, and the labor intensity of operators at the posts can be alleviated, so that the production efficiency is obviously improved.