Apparatus and method for fluid property measurements
In some embodiments, apparatus and systems, as well as methods, may operate to measure formation fluid and obtain data, the data having measurement levels that vary over a parameter. The data is grouped in one or more categories, each category having data falling within a range, and the grouped data is analyzed as a function of the parameter. In some embodiments, the grouped data is used to identify at least one fluid type of the formation fluid using the grouped data.
1. A method for sampling formation fluid, the method comprising:
introducing formation fluid into a pump, the pump having a pump piston, an inlet, and an outlet;
segregating the fluid within the pump;
pumping the fluid out through a flowline by action of the pump;
sensing the fluid with a fluid sensor at or downstream of the outlet of the pump to obtain sensor data;
operating on the sensor data using a processor to identify a fluid type correlated to position of the pump piston; and
selectively opening and closing a valve to accept a desired fluid into at least one sample chamber based on the sensor data correlated to the position of the pump piston and the fluid type, wherein the valve is opened and closed during the pumping.
2. The method as recited in claim 1 , wherein the valve is selectively opened and closed to accept a first fluid type into a first sample chamber, and to accept a second fluid type into a second sample chamber.
3. The method as recited in claim 1 , wherein the sensing includes sensing a density of the fluid.
4. The method as recited in claim 1 , wherein the method is performed until at least one sample chamber is filled.
5. The method as recited in claim 1 , wherein the method includes obtaining sensor data correlated to position of the pump piston in terms of fractions of pump displacement.
6. The method as recited in claim 1 , wherein the pump assists in segregating the fluid.