...Leland W. Jones 1 Manuscript received, November 12, 1943. 2 Geologist, Anderson-Prichard Oil Corporation. © 1944 American Association of Petroleum Geologists 1944 American Association of Petroleum Geologists The following method for determining the oil content of well...

.... After dewatering, the mineral fraction as well as the organic fraction obtained at the end of step 2 are ready for final treatment in step 5. The kerosene must be removed completely from both fractions. This is accomplished by thoroughly mixing each fraction with acetone and centrifuging...

... in the wet state with a mixture of benzene (70%), methanol (15%), and acetone (15%) in Soxhlet extractors for an 8-hour period, followed by drying at 50°C., grinding, and a second 8-hour extraction. As no differences, except in quantity, could be determined between the results of the wet and dry extractions...

... of benzene, methanol, and acetone. Extraction of organic matter from sediments .—Considerable effort was expended in determining the solvents and conditions which permitted extraction of the largest percentage of the organic content of the sediments. Several hundred experiments were run using various...

... with acetone and concentration of the pigments by transfer to chloroform for spectral measurements in a Beckman D.U. spectrophotometer. The content of pigments as pheophytin was calculated from the absorbance at the maximum at 668 m μ after applying a base-line correction for background absorbance of other...

...) and Louth K-45 (cuttings) The locations of these boreholes are shown in Figure 1. All the samples have been used to provide an over-all description of the organic matter present in the shale. In addition, a detailed study of variation through the shale has been performed on the Kugpik O-13 and L-24 wells...

... from several places in this section and analyzed for their hydrocarbon, asphalt, and kerogen content. Average values were computed, and the distribution of these types of organic matter through the entire section was determined. Most of the organic matter is in the form of kerogen in the shale...

... of calibration must also be well defined, as already shown in Figure 3B . Average Porosity of the Image. —Average porosity on the image is the mean porosity that can be determined by an arithmetic average, taking into account the mean porosity of each pixel over the whole numerical image...

... of the viscosity-temperature relationships of the combined high- and low-viscosity data ranges have been fitted to the VFT relationship and the coefficients as well as the standard errors of the fit are included in Table 4 . In addition, the absolute water contents of the hydrous samples was determined using...

... material depends mainly on the organic matter content of the soil material ( f oc ) ( Means et al., 1980 ). The quality of the organic matter is a secondary determinant for the amount of HOC sorbed to the soil material ( Chiou et al., 1998 ; Gauthier et al., 1987 ; Xing and Pignatello, 1997 ). Bed...

... is valid as well for analyses of feldspars and similarly anhydrous minerals with variability in spectra associated with compositional and structural variety. The error in determining total integrated area has been estimated to be less than 10%, and the possible error in the absorption coefficient ( Johnson...

... content. Crystals of gypsum, partly altered to sulphur, occur on distorted bedding surfaces of the mainly unweathered shale in the Newton Hamilton railroad cut one mile west of town. The crystals are in radiating clusters 1–2 mm. in diameter. The bed in which they occur is 2 feet thick and the shale...

... in certain cases upended prevailing theories in glaciology. Glacial geologists, for example, supposed that many fast-moving glaciers were underlain by deformable beds based on their observations of subglacial till well before it was an accepted fact in glaciology ( Alley et al. 1986 ; see Boulton (1986...

... of the two octahedral sites M1 and M2 as determined by Rietveld refinement: the data suggest that Fe located in M1 and in M2 contributes in a different way to the XANES spectrum. Fig. 5. Correlation between enstatite content (En mole %) and peaks B and A intensity ratio (I B /I A ) in the Fe K -edge...

... generations of gold mineralization can be obtained. During the petrographic study we searched for minerals with which to directly date the gold mineralization. The only possibilities found were pyrite and chalcopyrite but their Re contents were too low (<0.5 ppb) for determination of precise Re...

... calculations incorporating time and cooling rates to determine when the geometric center of a domain within a zoned crystal changes by 0.1%, in essence a center or core-retention calculation. The retention of domain-core Al content is an important consideration for the analysis of magmatic quartz...

..., respectively. Samples were taken from both clay beds and the water content was determined gravimetrically. Multiple samples from both beds showed their water content to be approximately 70% by weight (~ 85% by volume) in both cases. Following consolidation we stepped up flow velocity until erosion of the mud...

... eucaryotic algae. In addition, Microcystis is typified by a high content of zeaxanthin This paper provides detailed petrographic observations, as well as results of chemical analyses, showing the importance of microbial activity in the lake. The data support the initial hypothesis of toxic...

...°C to dryness to erase acetone. Several drops of concentrated HNO 3 and 30 percent H 2 O 2 were added to dissolve Re and the solution was then evaporated to dryness and picked up in 2 percent HNO 3 for ICP-MS determination of the Re isotope ratio. Cation-exchange resin was used to remove Na...

... muscovite for age determinations was extracted. 2 Fine-dirty phase of channel sandstone. Although relative percentages are not given in Table 1 , the following comments can be made: (1) the kaolinite in the sheet sandstone is not as well crystallized or as abundant as that in the channel...