Study on Fluid-Rock Interaction and Reuse of Flowback Fluid for Gel Fracturing in Desert Area

Table 1

PH values and densities of the flowback fluid in Tarim Oilfield in different flowback periods.

Sample number	Sampling time	PH value	Density (g/cc)
1	2015-7-31-02:00	6.71	1.22
2	2015-8-1-02:00	6.36	1.173
3	2015-8-1-14:00	6.25	1.154
4	2015-8-2-02:00	6.00	1.144
5	2015-8-3-02:00	5.93	1.131
6	2015-8-3-14:00	5.86	1.124
7	2015-8-4-02:00	5.87	1.119
8	2015-8-5-02:00	5.79	1.108
9	2015-8-5-14:00	5.81	1.101
10	2015-8-5-19:00	5.72	1.100
11	2015-8-6-14:00	5.85	1.096
12	2015-8-7-02:00	5.72	1.093
13	2015-8-8-02:00	5.71	1.088